38507372865 has 256 divisors, whose sum is σ = 80341632000. Its totient is φ = 17555346432.

The previous prime is 38507372837. The next prime is 38507372881. The reversal of 38507372865 is 56827370583.

38507372865 is a `hidden beast` number, since 3 + 8 + 507 + 3 + 72 + 8 + 65 = 666.

It is not a de Polignac number, because 38507372865 - 2¹³ = 38507364673 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 143149951 + ... + 143150219.

It is an arithmetic number, because the mean of its divisors is an integer number (313834500).

Almost surely, 2^38507372865 is an apocalyptic number.

It is an amenable number.

38507372865 is an abundant number, since it is smaller than the sum of its proper divisors (41834259135).

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

38507372865 is a wasteful number, since it uses less digits than its factorization.

38507372865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 38507372865 in words is "thirty-eight billion, five hundred seven million, three hundred seventy-two thousand, eight hundred sixty-five".