561126113279 has 2 divisors, whose sum is σ = 561126113280. Its totient is φ = 561126113278.

The previous prime is 561126113263. The next prime is 561126113287. The reversal of 561126113279 is 972311621165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561126113279 - 2⁴ = 561126113263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561126113239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280563056639 + 280563056640.

It is an arithmetic number, because the mean of its divisors is an integer number (280563056640).

Almost surely, 2^561126113279 is an apocalyptic number.

561126113279 is a deficient number, since it is larger than the sum of its proper divisors (1).

561126113279 is an equidigital number, since it uses as much as digits as its factorization.

561126113279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 44.

The spelling of 561126113279 in words is "five hundred sixty-one billion, one hundred twenty-six million, one hundred thirteen thousand, two hundred seventy-nine".