56660211206665 has 32 divisors (see below), whose sum is σ = 76321111479552. Its totient is φ = 40029631200000.

The previous prime is 56660211206611. The next prime is 56660211206671.

56660211206665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56660211206665 - 2⁷ = 56660211206537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 95930661 + ... + 96519490.

It is an arithmetic number, because the mean of its divisors is an integer number (2385034733736).

Almost surely, 2^{56660211206665} is an apocalyptic number.

56660211206665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56660211206665 is a deficient number, since it is larger than the sum of its proper divisors (19660900272887).

56660211206665 is a wasteful number, since it uses less digits than its factorization.

56660211206665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192450321.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 56660211206665 in words is "fifty-six trillion, six hundred sixty billion, two hundred eleven million, two hundred six thousand, six hundred sixty-five".