57636682121 has 2 divisors, whose sum is σ = 57636682122. Its totient is φ = 57636682120.

The previous prime is 57636682087. The next prime is 57636682183. The reversal of 57636682121 is 12128663675.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57629283721 + 7398400 = 240061^2 + 2720^2 .

It is a cyclic number.

It is not a de Polignac number, because 57636682121 - 2⁶ = 57636682057 is a prime.

It is not a weakly prime, because it can be changed into another prime (57636082121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28818341060 + 28818341061.

It is an arithmetic number, because the mean of its divisors is an integer number (28818341061).

Almost surely, 2^57636682121 is an apocalyptic number.

It is an amenable number.

57636682121 is a deficient number, since it is larger than the sum of its proper divisors (1).

57636682121 is an equidigital number, since it uses as much as digits as its factorization.

57636682121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 47.

The spelling of 57636682121 in words is "fifty-seven billion, six hundred thirty-six million, six hundred eighty-two thousand, one hundred twenty-one".