30604621721 has 8 divisors (see below), whose sum is σ = 31937017920. Its totient is φ = 29272372272.

The previous prime is 30604621681. The next prime is 30604621759. The reversal of 30604621721 is 12712640603.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30604621721 - 2³⁰ = 29530879897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30604611721) 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, 735746 + ... + 776228.

It is an arithmetic number, because the mean of its divisors is an integer number (3992127240).

Almost surely, 2^30604621721 is an apocalyptic number.

It is an amenable number.

30604621721 is a deficient number, since it is larger than the sum of its proper divisors (1332396199).

30604621721 is a wasteful number, since it uses less digits than its factorization.

30604621721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73375.

The product of its (nonzero) digits is 12096, while the sum is 32.

The spelling of 30604621721 in words is "thirty billion, six hundred four million, six hundred twenty-one thousand, seven hundred twenty-one".