128050785378 has 24 divisors (see below), whose sum is σ = 277994965248. Its totient is φ = 42598734072.

The previous prime is 128050785377. The next prime is 128050785389. The reversal of 128050785378 is 873587050821.

128050785378 is a `hidden beast` number, since 1 + 2 + 80 + 507 + 8 + 53 + 7 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (128050785377) 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, 7062450 + ... + 7080557.

It is an arithmetic number, because the mean of its divisors is an integer number (11583123552).

Almost surely, 2^128050785378 is an apocalyptic number.

128050785378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

128050785378 is an abundant number, since it is smaller than the sum of its proper divisors (149944179870).

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

128050785378 is a wasteful number, since it uses less digits than its factorization.

128050785378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14143518 (or 14143515 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 54.

The spelling of 128050785378 in words is "one hundred twenty-eight billion, fifty million, seven hundred eighty-five thousand, three hundred seventy-eight".