128149346980 has 48 divisors (see below), whose sum is σ = 272987801856. Its totient is φ = 50522245760.

The previous prime is 128149346959. The next prime is 128149347013. The reversal of 128149346980 is 89643941821.

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, 5337162 + ... + 5361118.

It is an arithmetic number, because the mean of its divisors is an integer number (5687245872).

Almost surely, 2^128149346980 is an apocalyptic number.

128149346980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128149346980 is an abundant number, since it is smaller than the sum of its proper divisors (144838454876).

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

128149346980 is a wasteful number, since it uses less digits than its factorization.

128149346980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27804 (or 27802 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 55.

The spelling of 128149346980 in words is "one hundred twenty-eight billion, one hundred forty-nine million, three hundred forty-six thousand, nine hundred eighty".