22172180741504 has 64 divisors (see below), whose sum is σ = 44324823628800. Its totient is φ = 11047537912320.

The previous prime is 22172180741467. The next prime is 22172180741509. The reversal of 22172180741504 is 40514708127122.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22172180741509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155458577 + ... + 155601135.

It is an arithmetic number, because the mean of its divisors is an integer number (692575369200).

Almost surely, 2^{22172180741504} is an apocalyptic number.

It is an amenable number.

22172180741504 is a deficient number, since it is larger than the sum of its proper divisors (22152642887296).

22172180741504 is a wasteful number, since it uses less digits than its factorization.

22172180741504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146791 (or 146779 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 44.

Adding to 22172180741504 its reverse (40514708127122), we get a palindrome (62686888868626).

The spelling of 22172180741504 in words is "twenty-two trillion, one hundred seventy-two billion, one hundred eighty million, seven hundred forty-one thousand, five hundred four".