56603513653 has 4 divisors (see below), whose sum is σ = 56687620588. Its totient is φ = 56519406720.

The previous prime is 56603513647. The next prime is 56603513663. The reversal of 56603513653 is 35631530665.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15620750289 + 40982763364 = 124983^2 + 202442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56603513653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56603513663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42052458 + ... + 42053803.

It is an arithmetic number, because the mean of its divisors is an integer number (14171905147).

Almost surely, 2^56603513653 is an apocalyptic number.

It is an amenable number.

56603513653 is a deficient number, since it is larger than the sum of its proper divisors (84106935).

56603513653 is an equidigital number, since it uses as much as digits as its factorization.

56603513653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84106934.

The product of its (nonzero) digits is 729000, while the sum is 43.

The spelling of 56603513653 in words is "fifty-six billion, six hundred three million, five hundred thirteen thousand, six hundred fifty-three".