38872357644 has 48 divisors (see below), whose sum is σ = 92992195296. Its totient is φ = 12630835200.

The previous prime is 38872357619. The next prime is 38872357687. The reversal of 38872357644 is 44675327883.

It is a super-2 number, since 2×38872357644² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 566304 + ... + 631224.

It is an arithmetic number, because the mean of its divisors is an integer number (1937337402).

Almost surely, 2^38872357644 is an apocalyptic number.

It is an amenable number.

38872357644 is an abundant number, since it is smaller than the sum of its proper divisors (54119837652).

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

38872357644 is a wasteful number, since it uses less digits than its factorization.

38872357644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66186 (or 66184 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 57.

The spelling of 38872357644 in words is "thirty-eight billion, eight hundred seventy-two million, three hundred fifty-seven thousand, six hundred forty-four".