557009961551 has 2 divisors, whose sum is σ = 557009961552. Its totient is φ = 557009961550.

The previous prime is 557009961533. The next prime is 557009961577. The reversal of 557009961551 is 155169900755.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 557009961551 - 2³⁴ = 539830092367 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 557009961493 and 557009961502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557009963551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278504980775 + 278504980776.

It is an arithmetic number, because the mean of its divisors is an integer number (278504980776).

Almost surely, 2^557009961551 is an apocalyptic number.

557009961551 is a deficient number, since it is larger than the sum of its proper divisors (1).

557009961551 is an equidigital number, since it uses as much as digits as its factorization.

557009961551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2126250, while the sum is 53.

The spelling of 557009961551 in words is "five hundred fifty-seven billion, nine million, nine hundred sixty-one thousand, five hundred fifty-one".