56621122112665 has 16 divisors (see below), whose sum is σ = 74124549262656. Its totient is φ = 41177690654400.

The previous prime is 56621122112663. The next prime is 56621122112669.

56621122112665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56621122112665 - 2¹ = 56621122112663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56621122112663) 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, 14590602 + ... + 18059011.

It is an arithmetic number, because the mean of its divisors is an integer number (4632784328916).

Almost surely, 2^{56621122112665} is an apocalyptic number.

56621122112665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56621122112665 is a deficient number, since it is larger than the sum of its proper divisors (17503427149991).

56621122112665 is a wasteful number, since it uses less digits than its factorization.

56621122112665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32681160.

The product of its digits is 518400, while the sum is 46.

It can be divided in two parts, 5662112 and 2112665, that added together give a palindrome (7774777).

The spelling of 56621122112665 in words is "fifty-six trillion, six hundred twenty-one billion, one hundred twenty-two million, one hundred twelve thousand, six hundred sixty-five".