22165240556263 has 24 divisors (see below), whose sum is σ = 26342531700720. Its totient is φ = 18590496261120.

The previous prime is 22165240556213. The next prime is 22165240556269. The reversal of 22165240556263 is 36265504256122.

It is not a de Polignac number, because 22165240556263 - 2³⁷ = 22027801602791 is a prime.

It is a super-2 number, since 2×22165240556263² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22165240556269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18634533 + ... + 19788286.

It is an arithmetic number, because the mean of its divisors is an integer number (1097605487530).

Almost surely, 2^{22165240556263} is an apocalyptic number.

22165240556263 is a deficient number, since it is larger than the sum of its proper divisors (4177291144457).

22165240556263 is a wasteful number, since it uses less digits than its factorization.

22165240556263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38423087 (or 38423080 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 49.

The spelling of 22165240556263 in words is "twenty-two trillion, one hundred sixty-five billion, two hundred forty million, five hundred fifty-six thousand, two hundred sixty-three".