561890508769 has 8 divisors (see below), whose sum is σ = 563465814912. Its totient is φ = 560316746640.

The previous prime is 561890508743. The next prime is 561890508799. The reversal of 561890508769 is 967805098165.

561890508769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 561890508769 - 2³⁵ = 527530770401 is a prime.

It is a super-2 number, since 2×561890508769² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 561890508769.

It is not an unprimeable number, because it can be changed into a prime (561890508799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344782 + ... + 1114744.

It is an arithmetic number, because the mean of its divisors is an integer number (70433226864).

Almost surely, 2^561890508769 is an apocalyptic number.

It is an amenable number.

561890508769 is a deficient number, since it is larger than the sum of its proper divisors (1575306143).

561890508769 is a wasteful number, since it uses less digits than its factorization.

561890508769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772007.

The product of its (nonzero) digits is 32659200, while the sum is 64.

The spelling of 561890508769 in words is "five hundred sixty-one billion, eight hundred ninety million, five hundred eight thousand, seven hundred sixty-nine".