56663166635345 has 4 divisors (see below), whose sum is σ = 67995799962420. Its totient is φ = 45330533308272.

The previous prime is 56663166635269. The next prime is 56663166635353. The reversal of 56663166635345 is 54353666136665.

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 36871709995264 + 19791456640081 = 6072208^2 + 4448759^2 .

It is a cyclic number.

It is not a de Polignac number, because 56663166635345 - 2⁴⁰ = 55563655007569 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5666316663530 + ... + 5666316663539.

It is an arithmetic number, because the mean of its divisors is an integer number (16998949990605).

Almost surely, 2^{56663166635345} is an apocalyptic number.

It is an amenable number.

56663166635345 is a deficient number, since it is larger than the sum of its proper divisors (11332633327075).

56663166635345 is a wasteful number, since it uses less digits than its factorization.

56663166635345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11332633327074.

The product of its digits is 629856000, while the sum is 65.

The spelling of 56663166635345 in words is "fifty-six trillion, six hundred sixty-three billion, one hundred sixty-six million, six hundred thirty-five thousand, three hundred forty-five".