56981709495 has 20 divisors (see below), whose sum is σ = 102144991080. Its totient is φ = 30390244848.

The previous prime is 56981709461. The next prime is 56981709527. The reversal of 56981709495 is 59490718965.

56981709495 is a `hidden beast` number, since 5 + 69 + 81 + 7 + 0 + 9 + 495 = 666.

It is not a de Polignac number, because 56981709495 - 2⁹ = 56981708983 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 70347385 + ... + 70348194.

It is an arithmetic number, because the mean of its divisors is an integer number (5107249554).

Almost surely, 2^56981709495 is an apocalyptic number.

56981709495 is a deficient number, since it is larger than the sum of its proper divisors (45163281585).

56981709495 is a wasteful number, since it uses less digits than its factorization.

56981709495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140695596 (or 140695587 counting only the distinct ones).

The product of its (nonzero) digits is 24494400, while the sum is 63.

The spelling of 56981709495 in words is "fifty-six billion, nine hundred eighty-one million, seven hundred nine thousand, four hundred ninety-five".