128772971200 has 84 divisors (see below), whose sum is σ = 333539017960. Its totient is φ = 48798167040.

The previous prime is 128772971189. The next prime is 128772971303. The reversal of 128772971200 is 2179277821.

It is a super-2 number, since 2×128772971200² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2087577 + ... + 2148376.

Almost surely, 2^128772971200 is an apocalyptic number.

128772971200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128772971200 is an abundant number, since it is smaller than the sum of its proper divisors (204766046760).

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

128772971200 is a wasteful number, since it uses less digits than its factorization.

128772971200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4235994 (or 4235979 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 46.

The spelling of 128772971200 in words is "one hundred twenty-eight billion, seven hundred seventy-two million, nine hundred seventy-one thousand, two hundred".