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61007428076 = 22767156720753
BaseRepresentation
bin111000110100010100…
…110111100111101100
312211110201020110021012
4320310110313213230
51444420400144301
644005412524352
74256551403540
oct706424674754
9184421213235
1061007428076
1123967114751
12b9a73206b8
1359a339838a
142d4a5b5a20
1518c0deeebb
hexe345379ec

61007428076 has 48 divisors (see below), whose sum is σ = 123920971776. Its totient is φ = 25738124544.

The previous prime is 61007428061. The next prime is 61007428193. The reversal of 61007428076 is 67082470016.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2929316 + ... + 2950068.

It is an arithmetic number, because the mean of its divisors is an integer number (2581686912).

Almost surely, 261007428076 is an apocalyptic number.

It is an amenable number.

61007428076 is an abundant number, since it is smaller than the sum of its proper divisors (62913543700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61007428076 is a wasteful number, since it uses less digits than its factorization.

61007428076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22398 (or 22396 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 61007428076 in words is "sixty-one billion, seven million, four hundred twenty-eight thousand, seventy-six".

Divisors: 1 2 4 7 14 28 67 134 268 469 938 1567 1876 3134 6268 10969 20753 21938 41506 43876 83012 104989 145271 209978 290542 419956 581084 734923 1390451 1469846 2780902 2939692 5561804 9733157 19466314 32519951 38932628 65039902 130079804 227639657 455279314 910558628 2178836717 4357673434 8715346868 15251857019 30503714038 61007428076