128500183900 has 36 divisors (see below), whose sum is σ = 304194983400. Its totient is φ = 46727339200.

The previous prime is 128500183883. The next prime is 128500183901. The reversal of 128500183900 is 9381005821.

It is a self number, because there is not a number n which added to its sum of digits gives 128500183900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128500183901) 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, 58408075 + ... + 58410274.

It is an arithmetic number, because the mean of its divisors is an integer number (8449860650).

Almost surely, 2^128500183900 is an apocalyptic number.

128500183900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128500183900 is an abundant number, since it is smaller than the sum of its proper divisors (175694799500).

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

128500183900 is a wasteful number, since it uses less digits than its factorization.

128500183900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116818374 (or 116818367 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The spelling of 128500183900 in words is "one hundred twenty-eight billion, five hundred million, one hundred eighty-three thousand, nine hundred".