556717315397 has 2 divisors, whose sum is σ = 556717315398. Its totient is φ = 556717315396.

The previous prime is 556717315381. The next prime is 556717315411. The reversal of 556717315397 is 793513717655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 527771737441 + 28945577956 = 726479^2 + 170134^2 .

It is a cyclic number.

It is not a de Polignac number, because 556717315397 - 2⁴ = 556717315381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556717314397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278358657698 + 278358657699.

It is an arithmetic number, because the mean of its divisors is an integer number (278358657699).

Almost surely, 2^556717315397 is an apocalyptic number.

It is an amenable number.

556717315397 is a deficient number, since it is larger than the sum of its proper divisors (1).

556717315397 is an equidigital number, since it uses as much as digits as its factorization.

556717315397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20837250, while the sum is 59.

The spelling of 556717315397 in words is "five hundred fifty-six billion, seven hundred seventeen million, three hundred fifteen thousand, three hundred ninety-seven".