15540345352 has 16 divisors (see below), whose sum is σ = 33300740160. Its totient is φ = 6660147984.

The previous prime is 15540345349. The next prime is 15540345361. The reversal of 15540345352 is 25354304551.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138753028 + ... + 138753139.

It is an arithmetic number, because the mean of its divisors is an integer number (2081296260).

Almost surely, 2^15540345352 is an apocalyptic number.

It is an amenable number.

15540345352 is an abundant number, since it is smaller than the sum of its proper divisors (17760394808).

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

15540345352 is a wasteful number, since it uses less digits than its factorization.

15540345352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277506180 (or 277506176 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 37.

The spelling of 15540345352 in words is "fifteen billion, five hundred forty million, three hundred forty-five thousand, three hundred fifty-two".