38115023621 has 16 divisors (see below), whose sum is σ = 41889189888. Its totient is φ = 34523884800.

The previous prime is 38115023599. The next prime is 38115023627. The reversal of 38115023621 is 12632051183.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38115023621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38115023627) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 104405 + ... + 295178.

It is an arithmetic number, because the mean of its divisors is an integer number (2618074368).

Almost surely, 2^38115023621 is an apocalyptic number.

38115023621 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

38115023621 is a deficient number, since it is larger than the sum of its proper divisors (3774166267).

38115023621 is a wasteful number, since it uses less digits than its factorization.

38115023621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399812.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 38115023621 in words is "thirty-eight billion, one hundred fifteen million, twenty-three thousand, six hundred twenty-one".