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15115152401442 = 23219231119124341
BaseRepresentation
bin1101101111110100010101…
…0010100010010000100010
31222111222211221220110122200
43123331011102202100202
53440121313003321232
652051445525114030
73120014365355442
oct333750522422042
958458757813580
1015115152401442
1148a83335300a5
121841501b58916
13858478008222
143a38120ac122
151b32a6c6977c
hexdbf454a2422

15115152401442 has 48 divisors (see below), whose sum is σ = 34488073389120. Its totient is φ = 4771140343200.

The previous prime is 15115152401383. The next prime is 15115152401443. The reversal of 15115152401442 is 24410425151151.

15115152401442 is a `hidden beast` number, since 1 + 5 + 115 + 1 + 524 + 0 + 14 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 15115152401397 and 15115152401406.

It is not an unprimeable number, because it can be changed into a prime (15115152401443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8771809 + ... + 10352532.

It is an arithmetic number, because the mean of its divisors is an integer number (718501528940).

Almost surely, 215115152401442 is an apocalyptic number.

15115152401442 is an abundant number, since it is smaller than the sum of its proper divisors (19372920987678).

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

15115152401442 is a wasteful number, since it uses less digits than its factorization.

15115152401442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19126679 (or 19126676 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 36.

Adding to 15115152401442 its reverse (24410425151151), we get a palindrome (39525577552593).

The spelling of 15115152401442 in words is "fifteen trillion, one hundred fifteen billion, one hundred fifty-two million, four hundred one thousand, four hundred forty-two".

Divisors: 1 2 3 6 9 18 19 38 57 114 171 342 2311 4622 6933 13866 20799 41598 43909 87818 131727 263454 395181 790362 19124341 38248682 57373023 114746046 172119069 344238138 363362479 726724958 1090087437 2180174874 3270262311 6540524622 44196352051 88392704102 132589056153 265178112306 397767168459 795534336918 839730688969 1679461377938 2519192066907 5038384133814 7557576200721 15115152401442