128900415140 has 48 divisors (see below), whose sum is σ = 309910672512. Its totient is φ = 44115902976.

The previous prime is 128900415121. The next prime is 128900415167. The reversal of 128900415140 is 41514009821.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 128900415140.

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, 738869 + ... + 896508.

It is an arithmetic number, because the mean of its divisors is an integer number (6456472344).

Almost surely, 2^128900415140 is an apocalyptic number.

128900415140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128900415140 is an abundant number, since it is smaller than the sum of its proper divisors (181010257372).

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

128900415140 is a wasteful number, since it uses less digits than its factorization.

128900415140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635956 (or 1635954 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 128900415140 in words is "one hundred twenty-eight billion, nine hundred million, four hundred fifteen thousand, one hundred forty".