15043815138 has 32 divisors (see below), whose sum is σ = 33586198272. Its totient is φ = 4452714000.

The previous prime is 15043815119. The next prime is 15043815173. The reversal of 15043815138 is 83151834051.

It is a junction number, because it is equal to n+sod(n) for n = 15043815096 and 15043815105.

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, 2647588 + ... + 2653263.

It is an arithmetic number, because the mean of its divisors is an integer number (1049568696).

Almost surely, 2^15043815138 is an apocalyptic number.

15043815138 is an abundant number, since it is smaller than the sum of its proper divisors (18542383134).

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

15043815138 is a wasteful number, since it uses less digits than its factorization.

15043815138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5300910.

The product of its (nonzero) digits is 57600, while the sum is 39.

The spelling of 15043815138 in words is "fifteen billion, forty-three million, eight hundred fifteen thousand, one hundred thirty-eight".