38752478457021 has 48 divisors (see below), whose sum is σ = 64050284113920. Its totient is φ = 22117308134400.

The previous prime is 38752478456963. The next prime is 38752478457059. The reversal of 38752478457021 is 12075487425783.

38752478457021 is a `hidden beast` number, since 3 + 8 + 7 + 52 + 4 + 7 + 8 + 4 + 570 + 2 + 1 = 666.

It is not a de Polignac number, because 38752478457021 - 2⁶ = 38752478456957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 38752478457021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38752478457521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 210848461 + ... + 211032173.

It is an arithmetic number, because the mean of its divisors is an integer number (1334380919040).

Almost surely, 2^{38752478457021} is an apocalyptic number.

It is an amenable number.

38752478457021 is a deficient number, since it is larger than the sum of its proper divisors (25297805656899).

38752478457021 is a wasteful number, since it uses less digits than its factorization.

38752478457021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187786 (or 187783 counting only the distinct ones).

The product of its (nonzero) digits is 105369600, while the sum is 63.

The spelling of 38752478457021 in words is "thirty-eight trillion, seven hundred fifty-two billion, four hundred seventy-eight million, four hundred fifty-seven thousand, twenty-one".