22173406907189 has 2 divisors, whose sum is σ = 22173406907190. Its totient is φ = 22173406907188.

The previous prime is 22173406907177. The next prime is 22173406907203. The reversal of 22173406907189 is 98170960437122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22007873475025 + 165533432164 = 4691255^2 + 406858^2 .

It is a cyclic number.

It is not a de Polignac number, because 22173406907189 - 2²⁰ = 22173405858613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22173406907129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11086703453594 + 11086703453595.

It is an arithmetic number, because the mean of its divisors is an integer number (11086703453595).

Almost surely, 2^{22173406907189} is an apocalyptic number.

It is an amenable number.

22173406907189 is a deficient number, since it is larger than the sum of its proper divisors (1).

22173406907189 is an equidigital number, since it uses as much as digits as its factorization.

22173406907189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9144576, while the sum is 59.

The spelling of 22173406907189 in words is "twenty-two trillion, one hundred seventy-three billion, four hundred six million, nine hundred seven thousand, one hundred eighty-nine".