56495891405 has 16 divisors (see below), whose sum is σ = 68068350000. Its totient is φ = 45014830080.

The previous prime is 56495891401. The next prime is 56495891429. The reversal of 56495891405 is 50419859465.

It can be written as a sum of positive squares in 8 ways, for example, as 6435408841 + 50060482564 = 80221^2 + 223742^2 .

It is not a de Polignac number, because 56495891405 - 2² = 56495891401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56495891401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1518971 + ... + 1555719.

It is an arithmetic number, because the mean of its divisors is an integer number (4254271875).

Almost surely, 2^56495891405 is an apocalyptic number.

It is an amenable number.

56495891405 is a deficient number, since it is larger than the sum of its proper divisors (11572458595).

56495891405 is a wasteful number, since it uses less digits than its factorization.

56495891405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37984.

The product of its (nonzero) digits is 7776000, while the sum is 56.

The spelling of 56495891405 in words is "fifty-six billion, four hundred ninety-five million, eight hundred ninety-one thousand, four hundred five".