561714357991 has 4 divisors (see below), whose sum is σ = 568824666400. Its totient is φ = 554604049584.

The previous prime is 561714357977. The next prime is 561714358033. The reversal of 561714357991 is 199753417165.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 561714357991 - 2⁵ = 561714357959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561714397991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3555154086 + ... + 3555154243.

It is an arithmetic number, because the mean of its divisors is an integer number (142206166600).

Almost surely, 2^561714357991 is an apocalyptic number.

561714357991 is a deficient number, since it is larger than the sum of its proper divisors (7110308409).

561714357991 is an equidigital number, since it uses as much as digits as its factorization.

561714357991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7110308408.

The product of its digits is 7144200, while the sum is 58.

The spelling of 561714357991 in words is "five hundred sixty-one billion, seven hundred fourteen million, three hundred fifty-seven thousand, nine hundred ninety-one".