15940814408 has 32 divisors (see below), whose sum is σ = 32131555200. Its totient is φ = 7390251072.

The previous prime is 15940814381. The next prime is 15940814429. The reversal of 15940814408 is 80441804951.

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, 1108535 + ... + 1122822.

It is an arithmetic number, because the mean of its divisors is an integer number (1004111100).

Almost surely, 2^15940814408 is an apocalyptic number.

It is an amenable number.

15940814408 is an abundant number, since it is smaller than the sum of its proper divisors (16190740792).

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

15940814408 is a wasteful number, since it uses less digits than its factorization.

15940814408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231429 (or 2231425 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 44.

The spelling of 15940814408 in words is "fifteen billion, nine hundred forty million, eight hundred fourteen thousand, four hundred eight".