128265977088 has 72 divisors (see below), whose sum is σ = 379305080000. Its totient is φ = 42755323392.

The previous prime is 128265977071. The next prime is 128265977089. The reversal of 128265977088 is 880779562821.

128265977088 is a `hidden beast` number, since 12 + 8 + 26 + 597 + 7 + 0 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128265977089) 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, 9271588 + ... + 9285411.

Almost surely, 2^128265977088 is an apocalyptic number.

128265977088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128265977088 is an abundant number, since it is smaller than the sum of its proper divisors (251039102912).

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

128265977088 is an equidigital number, since it uses as much as digits as its factorization.

128265977088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18557024 (or 18557004 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 63.

The spelling of 128265977088 in words is "one hundred twenty-eight billion, two hundred sixty-five million, nine hundred seventy-seven thousand, eighty-eight".