56623633632665 has 16 divisors (see below), whose sum is σ = 74297468941056. Its totient is φ = 41085277286400.

The previous prime is 56623633632661. The next prime is 56623633632703.

It is a happy number.

56623633632665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56623633632665 - 2² = 56623633632661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56623633632598 and 56623633632607.

It is not an unprimeable number, because it can be changed into a prime (56623633632661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1194315752 + ... + 1194363161.

It is an arithmetic number, because the mean of its divisors is an integer number (4643591808816).

Almost surely, 2^{56623633632665} is an apocalyptic number.

56623633632665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56623633632665 is a deficient number, since it is larger than the sum of its proper divisors (17673835308391).

56623633632665 is a wasteful number, since it uses less digits than its factorization.

56623633632665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388679360.

The product of its digits is 377913600, while the sum is 62.

The spelling of 56623633632665 in words is "fifty-six trillion, six hundred twenty-three billion, six hundred thirty-three million, six hundred thirty-two thousand, six hundred sixty-five".