128582523858 has 64 divisors (see below), whose sum is σ = 273828667392. Its totient is φ = 40112451840.

The previous prime is 128582523829. The next prime is 128582523869. The reversal of 128582523858 is 858325285821.

It is a junction number, because it is equal to n+sod(n) for n = 128582523798 and 128582523807.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23448385 + ... + 23453867.

It is an arithmetic number, because the mean of its divisors is an integer number (4278572928).

Almost surely, 2^128582523858 is an apocalyptic number.

128582523858 is an abundant number, since it is smaller than the sum of its proper divisors (145246143534).

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

128582523858 is a wasteful number, since it uses less digits than its factorization.

128582523858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6759.

The product of its digits is 12288000, while the sum is 57.

The spelling of 128582523858 in words is "one hundred twenty-eight billion, five hundred eighty-two million, five hundred twenty-three thousand, eight hundred fifty-eight".