128023373389 has 2 divisors, whose sum is σ = 128023373390. Its totient is φ = 128023373388.

The previous prime is 128023373363. The next prime is 128023373431. The reversal of 128023373389 is 983373320821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109903521289 + 18119852100 = 331517^2 + 134610^2 .

It is a cyclic number.

It is not a de Polignac number, because 128023373389 - 2²³ = 128014984781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128023374389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64011686694 + 64011686695.

It is an arithmetic number, because the mean of its divisors is an integer number (64011686695).

Almost surely, 2^128023373389 is an apocalyptic number.

It is an amenable number.

128023373389 is a deficient number, since it is larger than the sum of its proper divisors (1).

128023373389 is an equidigital number, since it uses as much as digits as its factorization.

128023373389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 128023373389 in words is "one hundred twenty-eight billion, twenty-three million, three hundred seventy-three thousand, three hundred eighty-nine".