561561466132 has 12 divisors (see below), whose sum is σ = 983042696020. Its totient is φ = 280692124416.

The previous prime is 561561466129. The next prime is 561561466159. The reversal of 561561466132 is 231664165165.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 487421800336 + 74139665796 = 698156^2 + 272286^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22137903 + ... + 22163254.

Almost surely, 2^561561466132 is an apocalyptic number.

It is an amenable number.

561561466132 is a deficient number, since it is larger than the sum of its proper divisors (421481229888).

561561466132 is a wasteful number, since it uses less digits than its factorization.

561561466132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44304330 (or 44304328 counting only the distinct ones).

The product of its digits is 777600, while the sum is 46.

The spelling of 561561466132 in words is "five hundred sixty-one billion, five hundred sixty-one million, four hundred sixty-six thousand, one hundred thirty-two".