561680767313 has 2 divisors, whose sum is σ = 561680767314. Its totient is φ = 561680767312.

The previous prime is 561680767303. The next prime is 561680767337. The reversal of 561680767313 is 313767086165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 517179599104 + 44501168209 = 719152^2 + 210953^2 .

It is a cyclic number.

It is not a de Polignac number, because 561680767313 - 2²⁰ = 561679718737 is a prime.

It is not a weakly prime, because it can be changed into another prime (561680767303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280840383656 + 280840383657.

It is an arithmetic number, because the mean of its divisors is an integer number (280840383657).

Almost surely, 2^561680767313 is an apocalyptic number.

It is an amenable number.

561680767313 is a deficient number, since it is larger than the sum of its proper divisors (1).

561680767313 is an equidigital number, since it uses as much as digits as its factorization.

561680767313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 561680767313 in words is "five hundred sixty-one billion, six hundred eighty million, seven hundred sixty-seven thousand, three hundred thirteen".