128291075514 has 24 divisors (see below), whose sum is σ = 317673139680. Its totient is φ = 36654592968.

The previous prime is 128291075513. The next prime is 128291075537. The reversal of 128291075514 is 415570192821.

128291075514 is a `hidden beast` number, since 1 + 2 + 8 + 2 + 91 + 0 + 7 + 551 + 4 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 128291075514.

It is not an unprimeable number, because it can be changed into a prime (128291075513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 509091444 + ... + 509091695.

It is an arithmetic number, because the mean of its divisors is an integer number (13236380820).

Almost surely, 2^128291075514 is an apocalyptic number.

128291075514 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

128291075514 is an abundant number, since it is smaller than the sum of its proper divisors (189382064166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128291075514 is a wasteful number, since it uses less digits than its factorization.

128291075514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018183154 (or 1018183151 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 45.

The spelling of 128291075514 in words is "one hundred twenty-eight billion, two hundred ninety-one million, seventy-five thousand, five hundred fourteen".