22175658561 has 32 divisors (see below), whose sum is σ = 34630041600. Its totient is φ = 12357601920.

The previous prime is 22175658539. The next prime is 22175658599. The reversal of 22175658561 is 16585657122.

It is not a de Polignac number, because 22175658561 - 2⁶ = 22175658497 is a prime.

It is a super-2 number, since 2×22175658561² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22175658561.

It is not an unprimeable number, because it can be changed into a prime (22175658511) 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, 3146880 + ... + 3153918.

It is an arithmetic number, because the mean of its divisors is an integer number (1082188800).

Almost surely, 2^22175658561 is an apocalyptic number.

22175658561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22175658561 is a deficient number, since it is larger than the sum of its proper divisors (12454383039).

22175658561 is a wasteful number, since it uses less digits than its factorization.

22175658561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10749.

The product of its digits is 1008000, while the sum is 48.

The spelling of 22175658561 in words is "twenty-two billion, one hundred seventy-five million, six hundred fifty-eight thousand, five hundred sixty-one".