561601644124 has 24 divisors (see below), whose sum is σ = 1026735847200. Its totient is φ = 268277173824.

The previous prime is 561601644083. The next prime is 561601644133. The reversal of 561601644124 is 421446106165.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3499699 + ... + 3656650.

It is an arithmetic number, because the mean of its divisors is an integer number (42780660300).

Almost surely, 2^561601644124 is an apocalyptic number.

It is an amenable number.

561601644124 is a deficient number, since it is larger than the sum of its proper divisors (465134203076).

561601644124 is a wasteful number, since it uses less digits than its factorization.

561601644124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7157229 (or 7157227 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 561601644124 in words is "five hundred sixty-one billion, six hundred one million, six hundred forty-four thousand, one hundred twenty-four".