57404237437 has 2 divisors, whose sum is σ = 57404237438. Its totient is φ = 57404237436.

The previous prime is 57404237389. The next prime is 57404237447. The reversal of 57404237437 is 73473240475.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51283678681 + 6120558756 = 226459^2 + 78234^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57404237437 is a prime.

It is a super-3 number, since 3×57404237437³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57404237447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28702118718 + 28702118719.

It is an arithmetic number, because the mean of its divisors is an integer number (28702118719).

Almost surely, 2^57404237437 is an apocalyptic number.

It is an amenable number.

57404237437 is a deficient number, since it is larger than the sum of its proper divisors (1).

57404237437 is an equidigital number, since it uses as much as digits as its factorization.

57404237437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680, while the sum is 46.

The spelling of 57404237437 in words is "fifty-seven billion, four hundred four million, two hundred thirty-seven thousand, four hundred thirty-seven".