56122155122165 has 32 divisors (see below), whose sum is σ = 76108861135872. Its totient is φ = 39358896192000.

The previous prime is 56122155122161. The next prime is 56122155122191.

It is a happy number.

56122155122165 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56122155122165 - 2² = 56122155122161 is a prime.

It is a super-2 number, since 2×56122155122165² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56122155122161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58090682 + ... + 59048891.

It is an arithmetic number, because the mean of its divisors is an integer number (2378401910496).

Almost surely, 2^{56122155122165} is an apocalyptic number.

56122155122165 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56122155122165 is a deficient number, since it is larger than the sum of its proper divisors (19986706013707).

56122155122165 is a wasteful number, since it uses less digits than its factorization.

56122155122165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117139901.

The product of its digits is 360000, while the sum is 44.

The spelling of 56122155122165 in words is "fifty-six trillion, one hundred twenty-two billion, one hundred fifty-five million, one hundred twenty-two thousand, one hundred sixty-five".