123322528789 has 2 divisors, whose sum is σ = 123322528790. Its totient is φ = 123322528788.

The previous prime is 123322528787. The next prime is 123322528793. The reversal of 123322528789 is 987825223321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122680666564 + 641862225 = 350258^2 + 25335^2 .

It is a cyclic number.

It is not a de Polignac number, because 123322528789 - 2¹ = 123322528787 is a prime.

It is a super-2 number, since 2×123322528789² (a number of 23 digits) contains 22 as substring.

Together with 123322528787, 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 (123322528781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61661264394 + 61661264395.

It is an arithmetic number, because the mean of its divisors is an integer number (61661264395).

Almost surely, 2^123322528789 is an apocalyptic number.

It is an amenable number.

123322528789 is a deficient number, since it is larger than the sum of its proper divisors (1).

123322528789 is an equidigital number, since it uses as much as digits as its factorization.

123322528789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 52.

The spelling of 123322528789 in words is "one hundred twenty-three billion, three hundred twenty-two million, five hundred twenty-eight thousand, seven hundred eighty-nine".