128247882858 has 12 divisors (see below), whose sum is σ = 277870412898. Its totient is φ = 42749294280.

The previous prime is 128247882857. The next prime is 128247882923. The reversal of 128247882858 is 858288742821.

128247882858 is a `hidden beast` number, since 1 + 2 + 8 + 2 + 478 + 82 + 85 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 122551105329 + 5696777529 = 350073^2 + 75477^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128247882795 and 128247882804.

It is not an unprimeable number, because it can be changed into a prime (128247882857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3562441173 + ... + 3562441208.

Almost surely, 2^128247882858 is an apocalyptic number.

128247882858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

128247882858 is an abundant number, since it is smaller than the sum of its proper divisors (149622530040).

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

128247882858 is a wasteful number, since it uses less digits than its factorization.

128247882858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7124882389 (or 7124882386 counting only the distinct ones).

The product of its digits is 36700160, while the sum is 63.

The spelling of 128247882858 in words is "one hundred twenty-eight billion, two hundred forty-seven million, eight hundred eighty-two thousand, eight hundred fifty-eight".