56491473982 has 4 divisors (see below), whose sum is σ = 84737210976. Its totient is φ = 28245736990.

The previous prime is 56491473953. The next prime is 56491474001. The reversal of 56491473982 is 28937419465.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×56491473982³ (a number of 33 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14122868494 + ... + 14122868497.

It is an arithmetic number, because the mean of its divisors is an integer number (21184302744).

Almost surely, 2^56491473982 is an apocalyptic number.

56491473982 is a deficient number, since it is larger than the sum of its proper divisors (28245736994).

56491473982 is a wasteful number, since it uses less digits than its factorization.

56491473982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28245736993.

The product of its digits is 13063680, while the sum is 58.

The spelling of 56491473982 in words is "fifty-six billion, four hundred ninety-one million, four hundred seventy-three thousand, nine hundred eighty-two".