561737604172 has 12 divisors (see below), whose sum is σ = 983068672320. Its totient is φ = 280860840656.

The previous prime is 561737604101. The next prime is 561737604179. The reversal of 561737604172 is 271406737165.

It is not an unprimeable number, because it can be changed into a prime (561737604179) 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 3 ways as a sum of consecutive naturals, for example, 1830172 + ... + 2114947.

It is an arithmetic number, because the mean of its divisors is an integer number (81922389360).

Almost surely, 2^561737604172 is an apocalyptic number.

It is an amenable number.

561737604172 is a deficient number, since it is larger than the sum of its proper divisors (421331068148).

561737604172 is a wasteful number, since it uses less digits than its factorization.

561737604172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3980720 (or 3980718 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 561737604172 in words is "five hundred sixty-one billion, seven hundred thirty-seven million, six hundred four thousand, one hundred seventy-two".