128133467730 has 64 divisors (see below), whose sum is σ = 350023161600. Its totient is φ = 33335533440.

The previous prime is 128133467729. The next prime is 128133467743. The reversal of 128133467730 is 37764331821.

128133467730 is a `hidden beast` number, since 1 + 28 + 133 + 467 + 7 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5776350 + ... + 5798489.

It is an arithmetic number, because the mean of its divisors is an integer number (5469111900).

Almost surely, 2^128133467730 is an apocalyptic number.

128133467730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128133467730 is an abundant number, since it is smaller than the sum of its proper divisors (221889693870).

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

128133467730 is a wasteful number, since it uses less digits than its factorization.

128133467730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11574896 (or 11574890 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 128133467730 in words is "one hundred twenty-eight billion, one hundred thirty-three million, four hundred sixty-seven thousand, seven hundred thirty".