15129718842 has 32 divisors (see below), whose sum is σ = 34608402432. Its totient is φ = 4319503344.

The previous prime is 15129718823. The next prime is 15129718859. The reversal of 15129718842 is 24881792151.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 15129718791 and 15129718800.

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, 79998 + ... + 191465.

It is an arithmetic number, because the mean of its divisors is an integer number (1081512576).

Almost surely, 2^15129718842 is an apocalyptic number.

15129718842 is an abundant number, since it is smaller than the sum of its proper divisors (19478683590).

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

15129718842 is a wasteful number, since it uses less digits than its factorization.

15129718842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272802.

The product of its digits is 322560, while the sum is 48.

The spelling of 15129718842 in words is "fifteen billion, one hundred twenty-nine million, seven hundred eighteen thousand, eight hundred forty-two".