128232550416 has 40 divisors (see below), whose sum is σ = 331443954880. Its totient is φ = 42721405056.

The previous prime is 128232550379. The next prime is 128232550423. The reversal of 128232550416 is 614055232821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620695 + ... + 801078.

It is an arithmetic number, because the mean of its divisors is an integer number (8286098872).

Almost surely, 2^128232550416 is an apocalyptic number.

128232550416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128232550416 is an abundant number, since it is smaller than the sum of its proper divisors (203211404464).

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

128232550416 is a wasteful number, since it uses less digits than its factorization.

128232550416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423663 (or 1423657 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 128232550416 in words is "one hundred twenty-eight billion, two hundred thirty-two million, five hundred fifty thousand, four hundred sixteen".