557437777697 has 2 divisors, whose sum is σ = 557437777698. Its totient is φ = 557437777696.

The previous prime is 557437777681. The next prime is 557437777709. The reversal of 557437777697 is 796777734755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 450300049936 + 107137727761 = 671044^2 + 327319^2 .

It is a cyclic number.

It is not a de Polignac number, because 557437777697 - 2⁴ = 557437777681 is a prime.

It is not a weakly prime, because it can be changed into another prime (557437777627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278718888848 + 278718888849.

It is an arithmetic number, because the mean of its divisors is an integer number (278718888849).

Almost surely, 2^557437777697 is an apocalyptic number.

It is an amenable number.

557437777697 is a deficient number, since it is larger than the sum of its proper divisors (1).

557437777697 is an equidigital number, since it uses as much as digits as its factorization.

557437777697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905913800, while the sum is 74.

The spelling of 557437777697 in words is "five hundred fifty-seven billion, four hundred thirty-seven million, seven hundred seventy-seven thousand, six hundred ninety-seven".