128485272858 has 32 divisors (see below), whose sum is σ = 271493514240. Its totient is φ = 40424566320.

The previous prime is 128485272847. The next prime is 128485272911. The reversal of 128485272858 is 858272584821.

It is a super-2 number, since 2×128485272858² (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, 2048560 + ... + 2110347.

It is an arithmetic number, because the mean of its divisors is an integer number (8484172320).

Almost surely, 2^128485272858 is an apocalyptic number.

128485272858 is an abundant number, since it is smaller than the sum of its proper divisors (143008241382).

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

128485272858 is a wasteful number, since it uses less digits than its factorization.

128485272858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4159202.

The product of its digits is 22937600, while the sum is 60.

The spelling of 128485272858 in words is "one hundred twenty-eight billion, four hundred eighty-five million, two hundred seventy-two thousand, eight hundred fifty-eight".