30516130720 has 24 divisors (see below), whose sum is σ = 72094359204. Its totient is φ = 12206452224.

The previous prime is 30516130699. The next prime is 30516130727. The reversal of 30516130720 is 2703161503.

It can be written as a sum of positive squares in 2 ways, for example, as 29621163664 + 894967056 = 172108^2 + 29916^2 .

It is not an unprimeable number, because it can be changed into a prime (30516130727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95362749 + ... + 95363068.

Almost surely, 2^30516130720 is an apocalyptic number.

It is an amenable number.

30516130720 is an abundant number, since it is smaller than the sum of its proper divisors (41578228484).

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

30516130720 is a wasteful number, since it uses less digits than its factorization.

30516130720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190725832 (or 190725824 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The spelling of 30516130720 in words is "thirty billion, five hundred sixteen million, one hundred thirty thousand, seven hundred twenty".