128361918792 has 32 divisors (see below), whose sum is σ = 323744669280. Its totient is φ = 42408656640.

The previous prime is 128361918791. The next prime is 128361918803. The reversal of 128361918792 is 297819163821.

It is not an unprimeable number, because it can be changed into a prime (128361918791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23662834 + ... + 23668257.

It is an arithmetic number, because the mean of its divisors is an integer number (10117020915).

Almost surely, 2^128361918792 is an apocalyptic number.

128361918792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128361918792 is an abundant number, since it is smaller than the sum of its proper divisors (195382750488).

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

128361918792 is a wasteful number, since it uses less digits than its factorization.

128361918792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47331213 (or 47331209 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 57.

The spelling of 128361918792 in words is "one hundred twenty-eight billion, three hundred sixty-one million, nine hundred eighteen thousand, seven hundred ninety-two".