38961916577946 has 24 divisors (see below), whose sum is σ = 85434564065760. Its totient is φ = 12830831964936.

The previous prime is 38961916577939. The next prime is 38961916577999. The reversal of 38961916577946 is 64977561916983.

It is a happy number.

38961916577946 is a `hidden beast` number, since 38 + 9 + 6 + 1 + 9 + 1 + 6 + 577 + 9 + 4 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13039461886 + ... + 13039464873.

It is an arithmetic number, because the mean of its divisors is an integer number (3559773502740).

Almost surely, 2^{38961916577946} is an apocalyptic number.

38961916577946 is an abundant number, since it is smaller than the sum of its proper divisors (46472647487814).

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

38961916577946 is a wasteful number, since it uses less digits than its factorization.

38961916577946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26078926850 (or 26078926847 counting only the distinct ones).

The product of its digits is 3703553280, while the sum is 81.

The spelling of 38961916577946 in words is "thirty-eight trillion, nine hundred sixty-one billion, nine hundred sixteen million, five hundred seventy-seven thousand, nine hundred forty-six".