57509639639 has 2 divisors, whose sum is σ = 57509639640. Its totient is φ = 57509639638.

The previous prime is 57509639557. The next prime is 57509639647. The reversal of 57509639639 is 93693690575.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57509639639 - 2¹² = 57509635543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57509639839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28754819819 + 28754819820.

It is an arithmetic number, because the mean of its divisors is an integer number (28754819820).

Almost surely, 2^57509639639 is an apocalyptic number.

57509639639 is a deficient number, since it is larger than the sum of its proper divisors (1).

57509639639 is an equidigital number, since it uses as much as digits as its factorization.

57509639639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41334300, while the sum is 62.

The spelling of 57509639639 in words is "fifty-seven billion, five hundred nine million, six hundred thirty-nine thousand, six hundred thirty-nine".