561672777311 has 2 divisors, whose sum is σ = 561672777312. Its totient is φ = 561672777310.

The previous prime is 561672777283. The next prime is 561672777319. The reversal of 561672777311 is 113777276165.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 561672777311 - 2²⁶ = 561605668447 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561672777319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280836388655 + 280836388656.

It is an arithmetic number, because the mean of its divisors is an integer number (280836388656).

Almost surely, 2^561672777311 is an apocalyptic number.

561672777311 is a deficient number, since it is larger than the sum of its proper divisors (1).

561672777311 is an equidigital number, since it uses as much as digits as its factorization.

561672777311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2593080, while the sum is 53.

The spelling of 561672777311 in words is "five hundred sixty-one billion, six hundred seventy-two million, seven hundred seventy-seven thousand, three hundred eleven".