57640738873 has 2 divisors, whose sum is σ = 57640738874. Its totient is φ = 57640738872.

The previous prime is 57640738847. The next prime is 57640738907. The reversal of 57640738873 is 37883704675.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30676471609 + 26964267264 = 175147^2 + 164208^2 .

It is a cyclic number.

It is not a de Polignac number, because 57640738873 - 2⁹ = 57640738361 is a prime.

It is not a weakly prime, because it can be changed into another prime (57640732873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28820369436 + 28820369437.

It is an arithmetic number, because the mean of its divisors is an integer number (28820369437).

Almost surely, 2^57640738873 is an apocalyptic number.

It is an amenable number.

57640738873 is a deficient number, since it is larger than the sum of its proper divisors (1).

57640738873 is an equidigital number, since it uses as much as digits as its factorization.

57640738873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23708160, while the sum is 58.

The spelling of 57640738873 in words is "fifty-seven billion, six hundred forty million, seven hundred thirty-eight thousand, eight hundred seventy-three".