561136631101 has 2 divisors, whose sum is σ = 561136631102. Its totient is φ = 561136631100.

The previous prime is 561136630973. The next prime is 561136631137. The reversal of 561136631101 is 101136631165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 546858771001 + 14277860100 = 739499^2 + 119490^2 .

It is a cyclic number.

It is not a de Polignac number, because 561136631101 - 2⁷ = 561136630973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561136631501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280568315550 + 280568315551.

It is an arithmetic number, because the mean of its divisors is an integer number (280568315551).

Almost surely, 2^561136631101 is an apocalyptic number.

It is an amenable number.

561136631101 is a deficient number, since it is larger than the sum of its proper divisors (1).

561136631101 is an equidigital number, since it uses as much as digits as its factorization.

561136631101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The spelling of 561136631101 in words is "five hundred sixty-one billion, one hundred thirty-six million, six hundred thirty-one thousand, one hundred one".