56138665145476 has 135 divisors (see below), whose sum is σ = 108043567830009. Its totient is φ = 25518867875712.

The previous prime is 56138665145443. The next prime is 56138665145597. The reversal of 56138665145476 is 67454156683165.

The square root of 56138665145476 is 7492574.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 2098876562500 + 54039788582976 = 1448750^2 + 7351176^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 769022810176 + ... + 769022810248.

Almost surely, 2^{56138665145476} is an apocalyptic number.

56138665145476 is the 7492574-th square number.

It is an amenable number.

56138665145476 is a deficient number, since it is larger than the sum of its proper divisors (51904902684533).

56138665145476 is an frugal number, since it uses more digits than its factorization.

56138665145476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 131 counting only the distinct ones).

The product of its digits is 435456000, while the sum is 67.

The spelling of 56138665145476 in words is "fifty-six trillion, one hundred thirty-eight billion, six hundred sixty-five million, one hundred forty-five thousand, four hundred seventy-six".