56522164136661 has 16 divisors (see below), whose sum is σ = 83738837022400. Its totient is φ = 37680408855504.

The previous prime is 56522164136593. The next prime is 56522164136689. The reversal of 56522164136661 is 16663146122565.

It is not a de Polignac number, because 56522164136661 - 2¹⁰ = 56522164135637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56522164136598 and 56522164136607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56522164536661) 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, 27716611 + ... + 29685936.

It is an arithmetic number, because the mean of its divisors is an integer number (5233677313900).

Almost surely, 2^{56522164136661} is an apocalyptic number.

It is an amenable number.

56522164136661 is a deficient number, since it is larger than the sum of its proper divisors (27216672885739).

56522164136661 is a wasteful number, since it uses less digits than its factorization.

56522164136661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57439025 (or 57439019 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 54.

The spelling of 56522164136661 in words is "fifty-six trillion, five hundred twenty-two billion, one hundred sixty-four million, one hundred thirty-six thousand, six hundred sixty-one".