38721810166404 has 24 divisors (see below), whose sum is σ = 90351137016000. Its totient is φ = 12907234822944.

The previous prime is 38721810166357. The next prime is 38721810166427. The reversal of 38721810166404 is 40466101812783.

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, 383422 + ... + 8808554.

It is an arithmetic number, because the mean of its divisors is an integer number (3764630709000).

Almost surely, 2^{38721810166404} is an apocalyptic number.

It is an amenable number.

38721810166404 is an abundant number, since it is smaller than the sum of its proper divisors (51629326849596).

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

38721810166404 is a wasteful number, since it uses less digits than its factorization.

38721810166404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8808139 (or 8808137 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 38721810166404 in words is "thirty-eight trillion, seven hundred twenty-one billion, eight hundred ten million, one hundred sixty-six thousand, four hundred four".