561220579327 has 2 divisors, whose sum is σ = 561220579328. Its totient is φ = 561220579326.

The previous prime is 561220579307. The next prime is 561220579397. The reversal of 561220579327 is 723975022165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 561220579327 - 2³⁵ = 526860840959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561220579307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280610289663 + 280610289664.

It is an arithmetic number, because the mean of its divisors is an integer number (280610289664).

Almost surely, 2^561220579327 is an apocalyptic number.

561220579327 is a deficient number, since it is larger than the sum of its proper divisors (1).

561220579327 is an equidigital number, since it uses as much as digits as its factorization.

561220579327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1587600, while the sum is 49.

The spelling of 561220579327 in words is "five hundred sixty-one billion, two hundred twenty million, five hundred seventy-nine thousand, three hundred twenty-seven".