128933223730 has 16 divisors (see below), whose sum is σ = 232726271040. Its totient is φ = 51429629872.

The previous prime is 128933223721. The next prime is 128933223733. The reversal of 128933223730 is 37322339821.

It is a super-2 number, since 2×128933223730² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128933223733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17953684 + ... + 17960863.

It is an arithmetic number, because the mean of its divisors is an integer number (14545391940).

Almost surely, 2^128933223730 is an apocalyptic number.

128933223730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128933223730 is a deficient number, since it is larger than the sum of its proper divisors (103793047310).

128933223730 is a wasteful number, since it uses less digits than its factorization.

128933223730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35914913.

The product of its (nonzero) digits is 326592, while the sum is 43.

The spelling of 128933223730 in words is "one hundred twenty-eight billion, nine hundred thirty-three million, two hundred twenty-three thousand, seven hundred thirty".