375399250921 has 2 divisors, whose sum is σ = 375399250922. Its totient is φ = 375399250920.

The previous prime is 375399250813. The next prime is 375399250951. The reversal of 375399250921 is 129052993573.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 365063682025 + 10335568896 = 604205^2 + 101664^2 .

It is a cyclic number.

It is not a de Polignac number, because 375399250921 - 2²⁷ = 375265033193 is a prime.

It is not a weakly prime, because it can be changed into another prime (375399250951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187699625460 + 187699625461.

It is an arithmetic number, because the mean of its divisors is an integer number (187699625461).

Almost surely, 2^375399250921 is an apocalyptic number.

It is an amenable number.

375399250921 is a deficient number, since it is larger than the sum of its proper divisors (1).

375399250921 is an equidigital number, since it uses as much as digits as its factorization.

375399250921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4592700, while the sum is 55.

The spelling of 375399250921 in words is "three hundred seventy-five billion, three hundred ninety-nine million, two hundred fifty thousand, nine hundred twenty-one".