72623923189 has 2 divisors, whose sum is σ = 72623923190. Its totient is φ = 72623923188.

The previous prime is 72623923187. The next prime is 72623923223. The reversal of 72623923189 is 98132932627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36474506289 + 36149416900 = 190983^2 + 190130^2 .

It is a cyclic number.

It is not a de Polignac number, because 72623923189 - 2¹ = 72623923187 is a prime.

Together with 72623923187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72623923181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36311961594 + 36311961595.

It is an arithmetic number, because the mean of its divisors is an integer number (36311961595).

Almost surely, 2^72623923189 is an apocalyptic number.

It is an amenable number.

72623923189 is a deficient number, since it is larger than the sum of its proper divisors (1).

72623923189 is an equidigital number, since it uses as much as digits as its factorization.

72623923189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 52.

The spelling of 72623923189 in words is "seventy-two billion, six hundred twenty-three million, nine hundred twenty-three thousand, one hundred eighty-nine".