57640738847 has 2 divisors, whose sum is σ = 57640738848. Its totient is φ = 57640738846.

The previous prime is 57640738829. The next prime is 57640738873. The reversal of 57640738847 is 74883704675.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57640738847 - 2⁶ = 57640738783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57640734847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28820369423 + 28820369424.

It is an arithmetic number, because the mean of its divisors is an integer number (28820369424).

Almost surely, 2^57640738847 is an apocalyptic number.

57640738847 is a deficient number, since it is larger than the sum of its proper divisors (1).

57640738847 is an equidigital number, since it uses as much as digits as its factorization.

57640738847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31610880, while the sum is 59.

The spelling of 57640738847 in words is "fifty-seven billion, six hundred forty million, seven hundred thirty-eight thousand, eight hundred forty-seven".