128243434970 has 32 divisors (see below), whose sum is σ = 263862662400. Its totient is φ = 43961245056.

The previous prime is 128243434961. The next prime is 128243434999. The reversal of 128243434970 is 79434342821.

It is a super-2 number, since 2×128243434970² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232286 + ... + 557174.

It is an arithmetic number, because the mean of its divisors is an integer number (8245708200).

Almost surely, 2^128243434970 is an apocalyptic number.

128243434970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128243434970 is an abundant number, since it is smaller than the sum of its proper divisors (135619227430).

128243434970 is a wasteful number, since it uses less digits than its factorization.

128243434970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330542.

The product of its (nonzero) digits is 1161216, while the sum is 47.

The spelling of 128243434970 in words is "one hundred twenty-eight billion, two hundred forty-three million, four hundred thirty-four thousand, nine hundred seventy".