561507532672 has 64 divisors (see below), whose sum is σ = 1121301442800. Its totient is φ = 280083677184.

The previous prime is 561507532667. The next prime is 561507532693. The reversal of 561507532672 is 276235705165.

It is a happy number.

561507532672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135989104 + ... + 135993232.

Almost surely, 2^561507532672 is an apocalyptic number.

It is an amenable number.

561507532672 is a deficient number, since it is larger than the sum of its proper divisors (559793910128).

561507532672 is a wasteful number, since it uses less digits than its factorization.

561507532672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6423 (or 6411 counting only the distinct ones).

The product of its (nonzero) digits is 2646000, while the sum is 49.

The spelling of 561507532672 in words is "five hundred sixty-one billion, five hundred seven million, five hundred thirty-two thousand, six hundred seventy-two".