372255008567821 has 2 divisors, whose sum is σ = 372255008567822. Its totient is φ = 372255008567820.

The previous prime is 372255008567807. The next prime is 372255008567899. The reversal of 372255008567821 is 128765800552273.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317740250572900 + 54514757994921 = 17825270^2 + 7383411^2 .

It is a cyclic number.

It is not a de Polignac number, because 372255008567821 - 2⁷ = 372255008567693 is a prime.

It is a super-2 number, since 2×372255008567821² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 372255008567821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (372255008567021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186127504283910 + 186127504283911.

It is an arithmetic number, because the mean of its divisors is an integer number (186127504283911).

Almost surely, 2^{372255008567821} is an apocalyptic number.

It is an amenable number.

372255008567821 is a deficient number, since it is larger than the sum of its proper divisors (1).

372255008567821 is an equidigital number, since it uses as much as digits as its factorization.

372255008567821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448000, while the sum is 61.

The spelling of 372255008567821 in words is "three hundred seventy-two trillion, two hundred fifty-five billion, eight million, five hundred sixty-seven thousand, eight hundred twenty-one".