Search a number
-
+
128769433185068 = 2213109137601275923
BaseRepresentation
bin11101010001110101111000…
…010100101010101100101100
3121212221020102012110002111122
4131101311320110222230230
5113334224244343410233
61133511505544240112
736060166411313054
oct3521657024525454
9555836365402448
10128769433185068
11380368a0025715
1212538466770038
1356b0ba0358450
1423b268c240564
15ed48c611dd98
hex751d7852ab2c

128769433185068 has 96 divisors (see below), whose sum is σ = 247106298774720. Its totient is φ = 58359489638400.

The previous prime is 128769433185037. The next prime is 128769433185079. The reversal of 128769433185068 is 860581334967821.

It is a junction number, because it is equal to n+sod(n) for n = 128769433184992 and 128769433185010.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 466548155 + ... + 466824077.

It is an arithmetic number, because the mean of its divisors is an integer number (2574023945570).

It is a 1-persistent number, because it is pandigital, but 2⋅128769433185068 = 257538866370136 is not.

Almost surely, 2128769433185068 is an apocalyptic number.

It is an amenable number.

128769433185068 is a deficient number, since it is larger than the sum of its proper divisors (118336865589652).

128769433185068 is a wasteful number, since it uses less digits than its factorization.

128769433185068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276787 (or 276785 counting only the distinct ones).

The product of its (nonzero) digits is 418037760, while the sum is 71.

The spelling of 128769433185068 in words is "one hundred twenty-eight trillion, seven hundred sixty-nine billion, four hundred thirty-three million, one hundred eighty-five thousand, sixty-eight".

Divisors: 1 2 4 13 26 52 109 137 218 274 436 548 601 1202 1417 1781 2404 2834 3562 5668 7124 7813 14933 15626 29866 31252 59732 65509 82337 131018 164674 194129 262036 275923 329348 388258 551846 776516 851617 1070381 1103692 1703234 2140762 3406468 3586999 4281524 7173998 8974733 14347996 17949466 30075607 35898932 37801451 60151214 75602902 116671529 120302428 151205804 165829723 233343058 331659446 390982891 466686116 491418863 663318892 781965782 982837726 1563931564 1965675452 2155786399 4120358159 4311572798 8240716318 8623145596 16481432636 18075439807 22718672051 36150879614 45437344102 53564656067 72301759228 90874688204 107129312134 214258624268 234980717491 295342736663 469961434982 590685473326 939922869964 1181370946652 2476335253559 4952670507118 9905341014236 32192358296267 64384716592534 128769433185068