56663266236665 has 16 divisors (see below), whose sum is σ = 74177692263360. Its totient is φ = 41209467309120.

The previous prime is 56663266236659. The next prime is 56663266236691.

56663266236665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56663266236665 - 2¹⁶ = 56663266171129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56663266236595 and 56663266236604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11095787 + ... + 15376703.

It is an arithmetic number, because the mean of its divisors is an integer number (4636105766460).

Almost surely, 2^{56663266236665} is an apocalyptic number.

56663266236665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56663266236665 is a deficient number, since it is larger than the sum of its proper divisors (17514426026695).

56663266236665 is a wasteful number, since it uses less digits than its factorization.

56663266236665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4521592.

The product of its digits is 1511654400, while the sum is 68.

The spelling of 56663266236665 in words is "fifty-six trillion, six hundred sixty-three billion, two hundred sixty-six million, two hundred thirty-six thousand, six hundred sixty-five".