15400940008 has 16 divisors (see below), whose sum is σ = 29283478560. Its totient is φ = 7592012400.

The previous prime is 15400939993. The next prime is 15400940011. The reversal of 15400940008 is 80004900451.

It is a happy number.

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, 13556598 + ... + 13557733.

It is an arithmetic number, because the mean of its divisors is an integer number (1830217410).

Almost surely, 2^15400940008 is an apocalyptic number.

It is an amenable number.

15400940008 is a deficient number, since it is larger than the sum of its proper divisors (13882538552).

15400940008 is a wasteful number, since it uses less digits than its factorization.

15400940008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27114408 (or 27114404 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 15400940008 in words is "fifteen billion, four hundred million, nine hundred forty thousand, eight".