38507311620 has 72 divisors (see below), whose sum is σ = 121884025536. Its totient is φ = 9822153792.

The previous prime is 38507311607. The next prime is 38507311621. The reversal of 38507311620 is 2611370583.

38507311620 is a `hidden beast` number, since 38 + 507 + 3 + 116 + 2 + 0 = 666.

38507311620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (38507311621) 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, 4646502 + ... + 4654781.

It is an arithmetic number, because the mean of its divisors is an integer number (1692833688).

Almost surely, 2^38507311620 is an apocalyptic number.

38507311620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38507311620 is an abundant number, since it is smaller than the sum of its proper divisors (83376713916).

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

38507311620 is a wasteful number, since it uses less digits than its factorization.

38507311620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9301321 (or 9301316 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

It can be divided in two parts, 385073 and 11620, that added together give a palindrome (396693).

The spelling of 38507311620 in words is "thirty-eight billion, five hundred seven million, three hundred eleven thousand, six hundred twenty".