561022255677 has 16 divisors (see below), whose sum is σ = 805585484480. Its totient is φ = 345238008192.

The previous prime is 561022255631. The next prime is 561022255693. The reversal of 561022255677 is 776552220165.

It is not a de Polignac number, because 561022255677 - 2¹⁵ = 561022222909 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 (561022255477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2773038 + ... + 2968464.

It is an arithmetic number, because the mean of its divisors is an integer number (50349092780).

Almost surely, 2^561022255677 is an apocalyptic number.

It is an amenable number.

561022255677 is a deficient number, since it is larger than the sum of its proper divisors (244563228803).

561022255677 is a wasteful number, since it uses less digits than its factorization.

561022255677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269052.

The product of its (nonzero) digits is 1764000, while the sum is 48.

The spelling of 561022255677 in words is "five hundred sixty-one billion, twenty-two million, two hundred fifty-five thousand, six hundred seventy-seven".