556557758371 has 2 divisors, whose sum is σ = 556557758372. Its totient is φ = 556557758370.

The previous prime is 556557758333. The next prime is 556557758377. The reversal of 556557758371 is 173857755655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556557758371 - 2¹⁷ = 556557627299 is a prime.

It is not a weakly prime, because it can be changed into another prime (556557758377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278278879185 + 278278879186.

It is an arithmetic number, because the mean of its divisors is an integer number (278278879186).

Almost surely, 2^556557758371 is an apocalyptic number.

556557758371 is a deficient number, since it is larger than the sum of its proper divisors (1).

556557758371 is an equidigital number, since it uses as much as digits as its factorization.

556557758371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 154350000, while the sum is 64.

The spelling of 556557758371 in words is "five hundred fifty-six billion, five hundred fifty-seven million, seven hundred fifty-eight thousand, three hundred seventy-one".