128050785390 has 64 divisors (see below), whose sum is σ = 337267929600. Its totient is φ = 30856717440.

The previous prime is 128050785389. The next prime is 128050785403. The reversal of 128050785390 is 93587050821.

It is a congruent number.

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, 1106665 + ... + 1216884.

It is an arithmetic number, because the mean of its divisors is an integer number (5269811400).

Almost surely, 2^128050785390 is an apocalyptic number.

128050785390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128050785390 is an abundant number, since it is smaller than the sum of its proper divisors (209217144210).

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

128050785390 is a wasteful number, since it uses less digits than its factorization.

128050785390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323737.

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 128050785390 in words is "one hundred twenty-eight billion, fifty million, seven hundred eighty-five thousand, three hundred ninety".