375633056421 has 24 divisors (see below), whose sum is σ = 643059062464. Its totient is φ = 214647459840.

The previous prime is 375633056233. The next prime is 375633056423. The reversal of 375633056421 is 124650336573.

It is a happy number.

375633056421 is a `hidden beast` number, since 3 + 7 + 5 + 63 + 3 + 0 + 564 + 21 = 666.

It is not a de Polignac number, because 375633056421 - 2²¹ = 375630959269 is a prime.

It is a super-2 number, since 2×375633056421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (375633056423) 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, 110413660 + ... + 110417061.

Almost surely, 2^375633056421 is an apocalyptic number.

It is an amenable number.

375633056421 is a deficient number, since it is larger than the sum of its proper divisors (267426006043).

375633056421 is an equidigital number, since it uses as much as digits as its factorization.

375633056421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220830743 (or 220830731 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 45.

The spelling of 375633056421 in words is "three hundred seventy-five billion, six hundred thirty-three million, fifty-six thousand, four hundred twenty-one".