38409344664 has 32 divisors (see below), whose sum is σ = 101077224000. Its totient is φ = 12129266592.

The previous prime is 38409344657. The next prime is 38409344693. The reversal of 38409344664 is 46644390483.

It is a congruent number.

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, 42115054 + ... + 42115965.

It is an arithmetic number, because the mean of its divisors is an integer number (3158663250).

Almost surely, 2^38409344664 is an apocalyptic number.

It is an amenable number.

38409344664 is an abundant number, since it is smaller than the sum of its proper divisors (62667879336).

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

38409344664 is a wasteful number, since it uses less digits than its factorization.

38409344664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84231047 (or 84231043 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 51.

The spelling of 38409344664 in words is "thirty-eight billion, four hundred nine million, three hundred forty-four thousand, six hundred sixty-four".