56561181284 has 12 divisors (see below), whose sum is σ = 98986406400. Its totient is φ = 28279350888.

The previous prime is 56561181241. The next prime is 56561181289. The reversal of 56561181284 is 48218116565.

It is not an unprimeable number, because it can be changed into a prime (56561181289) 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, 203204 + ... + 392955.

It is an arithmetic number, because the mean of its divisors is an integer number (8248867200).

Almost surely, 2^56561181284 is an apocalyptic number.

It is an amenable number.

56561181284 is a deficient number, since it is larger than the sum of its proper divisors (42425225116).

56561181284 is a wasteful number, since it uses less digits than its factorization.

56561181284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619882 (or 619880 counting only the distinct ones).

The product of its digits is 460800, while the sum is 47.

The spelling of 56561181284 in words is "fifty-six billion, five hundred sixty-one million, one hundred eighty-one thousand, two hundred eighty-four".