15165207940 has 24 divisors (see below), whose sum is σ = 32128772760. Its totient is φ = 6012400128.

The previous prime is 15165207923. The next prime is 15165207973. The reversal of 15165207940 is 4970256151.

It can be written as a sum of positive squares in 4 ways, for example, as 914578564 + 14250629376 = 30242^2 + 119376^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15165207893 and 15165207902.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3352875 + ... + 3357394.

It is an arithmetic number, because the mean of its divisors is an integer number (1338698865).

Almost surely, 2^15165207940 is an apocalyptic number.

15165207940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15165207940 is an abundant number, since it is smaller than the sum of its proper divisors (16963564820).

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

15165207940 is a wasteful number, since it uses less digits than its factorization.

15165207940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6710391 (or 6710389 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 15165207940 in words is "fifteen billion, one hundred sixty-five million, two hundred seven thousand, nine hundred forty".