56651277215665 has 32 divisors (see below), whose sum is σ = 75897775780992. Its totient is φ = 40236715008000.

The previous prime is 56651277215629. The next prime is 56651277215699.

56651277215665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56651277215665 - 2⁹ = 56651277215153 is a prime.

It is a super-2 number, since 2×56651277215665² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 56651277215597 and 56651277215606.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13955185 + ... + 17551345.

It is an arithmetic number, because the mean of its divisors is an integer number (2371805493156).

Almost surely, 2^{56651277215665} is an apocalyptic number.

56651277215665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56651277215665 is a deficient number, since it is larger than the sum of its proper divisors (19246498565327).

56651277215665 is a wasteful number, since it uses less digits than its factorization.

56651277215665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3602881.

The product of its digits is 158760000, while the sum is 64.

The spelling of 56651277215665 in words is "fifty-six trillion, six hundred fifty-one billion, two hundred seventy-seven million, two hundred fifteen thousand, six hundred sixty-five".