57690991913 has 4 divisors (see below), whose sum is σ = 57797630148. Its totient is φ = 57584353680.

The previous prime is 57690991907. The next prime is 57690991961. The reversal of 57690991913 is 31919909675.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14349164944 + 43341826969 = 119788^2 + 208187^2 .

It is a cyclic number.

It is not a de Polignac number, because 57690991913 - 2¹⁸ = 57690729769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57690991213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53318306 + ... + 53319387.

It is an arithmetic number, because the mean of its divisors is an integer number (14449407537).

Almost surely, 2^57690991913 is an apocalyptic number.

It is an amenable number.

57690991913 is a deficient number, since it is larger than the sum of its proper divisors (106638235).

57690991913 is a wasteful number, since it uses less digits than its factorization.

57690991913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106638234.

The product of its (nonzero) digits is 4133430, while the sum is 59.

The spelling of 57690991913 in words is "fifty-seven billion, six hundred ninety million, nine hundred ninety-one thousand, nine hundred thirteen".