38557045021 has 32 divisors (see below), whose sum is σ = 44783222400. Its totient is φ = 32827680000.

The previous prime is 38557044991. The next prime is 38557045039. The reversal of 38557045021 is 12054075583.

It is a cyclic number.

It is not a de Polignac number, because 38557045021 - 2⁷ = 38557044893 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 (38557040021) 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 31 ways as a sum of consecutive naturals, for example, 21551395 + ... + 21553183.

It is an arithmetic number, because the mean of its divisors is an integer number (1399475700).

Almost surely, 2^38557045021 is an apocalyptic number.

It is an amenable number.

38557045021 is a deficient number, since it is larger than the sum of its proper divisors (6226177379).

38557045021 is a wasteful number, since it uses less digits than its factorization.

38557045021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941.

The product of its (nonzero) digits is 168000, while the sum is 40.

The spelling of 38557045021 in words is "thirty-eight billion, five hundred fifty-seven million, forty-five thousand, twenty-one".