128300915772 has 18 divisors (see below), whose sum is σ = 324316203848. Its totient is φ = 42766971912.

The previous prime is 128300915767. The next prime is 128300915773. The reversal of 128300915772 is 277519003821.

128300915772 is a `hidden beast` number, since 128 + 300 + 9 + 157 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×128300915772² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128300915773) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1781957128 + ... + 1781957199.

Almost surely, 2^128300915772 is an apocalyptic number.

128300915772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128300915772 is an abundant number, since it is smaller than the sum of its proper divisors (196015288076).

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

128300915772 is a wasteful number, since it uses less digits than its factorization.

128300915772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3563914337 (or 3563914332 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 128300915772 in words is "one hundred twenty-eight billion, three hundred million, nine hundred fifteen thousand, seven hundred seventy-two".