30845992128 has 56 divisors (see below), whose sum is σ = 93272408832. Its totient is φ = 8813140224.

The previous prime is 30845992123. The next prime is 30845992147. The reversal of 30845992128 is 82129954803.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (30845992123) 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, 11474100 + ... + 11476787.

Almost surely, 2^30845992128 is an apocalyptic number.

It is an amenable number.

30845992128 is an abundant number, since it is smaller than the sum of its proper divisors (62426416704).

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

30845992128 is a wasteful number, since it uses less digits than its factorization.

30845992128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22950909 (or 22950899 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 30845992128 in words is "thirty billion, eight hundred forty-five million, nine hundred ninety-two thousand, one hundred twenty-eight".