57213753361 has 2 divisors, whose sum is σ = 57213753362. Its totient is φ = 57213753360.

The previous prime is 57213753349. The next prime is 57213753371. The reversal of 57213753361 is 16335731275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52638583761 + 4575169600 = 229431^2 + 67640^2 .

It is a cyclic number.

It is not a de Polignac number, because 57213753361 - 2²³ = 57205364753 is a prime.

It is not a weakly prime, because it can be changed into another prime (57213753371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28606876680 + 28606876681.

It is an arithmetic number, because the mean of its divisors is an integer number (28606876681).

Almost surely, 2^57213753361 is an apocalyptic number.

It is an amenable number.

57213753361 is a deficient number, since it is larger than the sum of its proper divisors (1).

57213753361 is an equidigital number, since it uses as much as digits as its factorization.

57213753361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 396900, while the sum is 43.

The spelling of 57213753361 in words is "fifty-seven billion, two hundred thirteen million, seven hundred fifty-three thousand, three hundred sixty-one".