38644816368 has 40 divisors (see below), whose sum is σ = 101322487168. Its totient is φ = 12689341632.

The previous prime is 38644816297. The next prime is 38644816403. The reversal of 38644816368 is 86361844683.

It is a super-2 number, since 2×38644816368² (a number of 22 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 6004996 + ... + 6011427.

Almost surely, 2^38644816368 is an apocalyptic number.

It is an amenable number.

38644816368 is an abundant number, since it is smaller than the sum of its proper divisors (62677670800).

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

38644816368 is a wasteful number, since it uses less digits than its factorization.

38644816368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12016501 (or 12016495 counting only the distinct ones).

The product of its digits is 15925248, while the sum is 57.

The spelling of 38644816368 in words is "thirty-eight billion, six hundred forty-four million, eight hundred sixteen thousand, three hundred sixty-eight".