22502166365 has 24 divisors (see below), whose sum is σ = 33258910392. Its totient is φ = 14522403840.

The previous prime is 22502166361. The next prime is 22502166373. The reversal of 22502166365 is 56366120522.

It can be written as a sum of positive squares in 4 ways, for example, as 425555641 + 22076610724 = 20629^2 + 148582^2 .

It is not a de Polignac number, because 22502166365 - 2² = 22502166361 is a prime.

It is a super-2 number, since 2×22502166365² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22502166361) 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, 2697176 + ... + 2705505.

It is an arithmetic number, because the mean of its divisors is an integer number (1385787933).

Almost surely, 2^22502166365 is an apocalyptic number.

It is an amenable number.

22502166365 is a deficient number, since it is larger than the sum of its proper divisors (10756744027).

22502166365 is a wasteful number, since it uses less digits than its factorization.

22502166365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5402717 (or 5402710 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

Adding to 22502166365 its reverse (56366120522), we get a palindrome (78868286887).

The spelling of 22502166365 in words is "twenty-two billion, five hundred two million, one hundred sixty-six thousand, three hundred sixty-five".