38665672406 has 12 divisors (see below), whose sum is σ = 61610873388. Its totient is φ = 18195610272.

The previous prime is 38665672307. The next prime is 38665672427. The reversal of 38665672406 is 60427656683.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33447236 + ... + 33448391.

It is an arithmetic number, because the mean of its divisors is an integer number (5134239449).

Almost surely, 2^38665672406 is an apocalyptic number.

38665672406 is a deficient number, since it is larger than the sum of its proper divisors (22945200982).

38665672406 is a wasteful number, since it uses less digits than its factorization.

38665672406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66895663 (or 66895646 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 53.

The spelling of 38665672406 in words is "thirty-eight billion, six hundred sixty-five million, six hundred seventy-two thousand, four hundred six".