561300394465 has 16 divisors (see below), whose sum is σ = 684002346048. Its totient is φ = 442115999296.

The previous prime is 561300394441. The next prime is 561300394483. The reversal of 561300394465 is 564493003165.

It is a cyclic number.

It is not a de Polignac number, because 561300394465 - 2⁵ = 561300394433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2186479 + ... + 2429668.

It is an arithmetic number, because the mean of its divisors is an integer number (42750146628).

Almost surely, 2^561300394465 is an apocalyptic number.

It is an amenable number.

561300394465 is a deficient number, since it is larger than the sum of its proper divisors (122701951583).

561300394465 is a wasteful number, since it uses less digits than its factorization.

561300394465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4616528.

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 561300394465 in words is "five hundred sixty-one billion, three hundred million, three hundred ninety-four thousand, four hundred sixty-five".