30721716604 has 12 divisors (see below), whose sum is σ = 53791209864. Its totient is φ = 15352799504.

The previous prime is 30721716589. The next prime is 30721716637. The reversal of 30721716604 is 40661712703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2006119 + ... + 2021374.

It is an arithmetic number, because the mean of its divisors is an integer number (4482600822).

Almost surely, 2^30721716604 is an apocalyptic number.

It is an amenable number.

30721716604 is a deficient number, since it is larger than the sum of its proper divisors (23069493260).

30721716604 is a wasteful number, since it uses less digits than its factorization.

30721716604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4029404 (or 4029402 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 30721716604 in words is "thirty billion, seven hundred twenty-one million, seven hundred sixteen thousand, six hundred four".