128253378239 has 16 divisors (see below), whose sum is σ = 157383254016. Its totient is φ = 102007651200.

The previous prime is 128253378199. The next prime is 128253378263. The reversal of 128253378239 is 932873352821.

It is not a de Polignac number, because 128253378239 - 2¹² = 128253374143 is a prime.

It is a super-2 number, since 2×128253378239² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128253378299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7581407 + ... + 7598304.

It is an arithmetic number, because the mean of its divisors is an integer number (9836453376).

Almost surely, 2^128253378239 is an apocalyptic number.

128253378239 is a deficient number, since it is larger than the sum of its proper divisors (29129875777).

128253378239 is a wasteful number, since it uses less digits than its factorization.

128253378239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15179806.

The product of its digits is 4354560, while the sum is 53.

The spelling of 128253378239 in words is "one hundred twenty-eight billion, two hundred fifty-three million, three hundred seventy-eight thousand, two hundred thirty-nine".