557657715673 has 2 divisors, whose sum is σ = 557657715674. Its totient is φ = 557657715672.

The previous prime is 557657715649. The next prime is 557657715683. The reversal of 557657715673 is 376517756755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 519095753289 + 38561962384 = 720483^2 + 196372^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557657715673 is a prime.

It is not a weakly prime, because it can be changed into another prime (557657715683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278828857836 + 278828857837.

It is an arithmetic number, because the mean of its divisors is an integer number (278828857837).

Almost surely, 2^557657715673 is an apocalyptic number.

It is an amenable number.

557657715673 is a deficient number, since it is larger than the sum of its proper divisors (1).

557657715673 is an equidigital number, since it uses as much as digits as its factorization.

557657715673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162067500, while the sum is 64.

The spelling of 557657715673 in words is "five hundred fifty-seven billion, six hundred fifty-seven million, seven hundred fifteen thousand, six hundred seventy-three".