38637540216 has 128 divisors (see below), whose sum is σ = 117290534400. Its totient is φ = 11687639040.

The previous prime is 38637540199. The next prime is 38637540241. The reversal of 38637540216 is 61204573683.

38637540216 is a `hidden beast` number, since 3 + 8 + 637 + 5 + 4 + 0 + 2 + 1 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1356861 + ... + 1385043.

It is an arithmetic number, because the mean of its divisors is an integer number (916332300).

Almost surely, 2^38637540216 is an apocalyptic number.

38637540216 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38637540216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58645267200).

38637540216 is an abundant number, since it is smaller than the sum of its proper divisors (78652994184).

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

38637540216 is a wasteful number, since it uses less digits than its factorization.

38637540216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28786 (or 28776 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 38637540216 in words is "thirty-eight billion, six hundred thirty-seven million, five hundred forty thousand, two hundred sixteen".