561470816634 has 64 divisors (see below), whose sum is σ = 1383817188096. Its totient is φ = 147894303744.

The previous prime is 561470816623. The next prime is 561470816639. The reversal of 561470816634 is 436618074165.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (561470816639) 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 31 ways as a sum of consecutive naturals, for example, 209967 + ... + 1080290.

It is an arithmetic number, because the mean of its divisors is an integer number (21622143564).

Almost surely, 2^561470816634 is an apocalyptic number.

561470816634 is an abundant number, since it is smaller than the sum of its proper divisors (822346371462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561470816634 is a wasteful number, since it uses less digits than its factorization.

561470816634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291079.

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 561470816634 in words is "five hundred sixty-one billion, four hundred seventy million, eight hundred sixteen thousand, six hundred thirty-four".