38678880643767 has 24 divisors (see below), whose sum is σ = 68762454479264. Its totient is φ = 20402046932544.

The previous prime is 38678880643759. The next prime is 38678880643829. The reversal of 38678880643767 is 76734608887683.

38678880643767 is a `hidden beast` number, since 38 + 6 + 7 + 88 + 80 + 64 + 376 + 7 = 666.

It is not a de Polignac number, because 38678880643767 - 2³ = 38678880643759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38678880643757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23613479428 + ... + 23613481065.

Almost surely, 2^{38678880643767} is an apocalyptic number.

38678880643767 is a deficient number, since it is larger than the sum of its proper divisors (30083573835497).

38678880643767 is a wasteful number, since it uses less digits than its factorization.

38678880643767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47226960519 (or 47226960516 counting only the distinct ones).

The product of its (nonzero) digits is 10924720128, while the sum is 81.

The spelling of 38678880643767 in words is "thirty-eight trillion, six hundred seventy-eight billion, eight hundred eighty million, six hundred forty-three thousand, seven hundred sixty-seven".