2056445465985 has 48 divisors (see below), whose sum is σ = 3597621627600. Its totient is φ = 1086583652352.

The previous prime is 2056445465947. The next prime is 2056445465999. The reversal of 2056445465985 is 5895645446502.

2056445465985 is a `hidden beast` number, since 2 + 0 + 5 + 6 + 4 + 4 + 546 + 5 + 9 + 85 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 2085109569 + 2054360356416 = 45663^2 + 1433304^2 .

It is not a de Polignac number, because 2056445465985 - 2¹⁷ = 2056445334913 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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55668001 + ... + 55704929.

It is an arithmetic number, because the mean of its divisors is an integer number (74950450575).

Almost surely, 2^{2056445465985} is an apocalyptic number.

It is an amenable number.

2056445465985 is a deficient number, since it is larger than the sum of its proper divisors (1541176161615).

2056445465985 is a wasteful number, since it uses less digits than its factorization.

2056445465985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48402 (or 48399 counting only the distinct ones).

The product of its (nonzero) digits is 207360000, while the sum is 63.

The spelling of 2056445465985 in words is "two trillion, fifty-six billion, four hundred forty-five million, four hundred sixty-five thousand, nine hundred eighty-five".