30621997488 has 20 divisors (see below), whose sum is σ = 79106826968. Its totient is φ = 10207332480.

The previous prime is 30621997453. The next prime is 30621997519. The reversal of 30621997488 is 88479912603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318979093 + ... + 318979188.

Almost surely, 2^30621997488 is an apocalyptic number.

It is an amenable number.

30621997488 is an abundant number, since it is smaller than the sum of its proper divisors (48484829480).

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

30621997488 is a wasteful number, since it uses less digits than its factorization.

30621997488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637958292 (or 637958286 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 30621997488 in words is "thirty billion, six hundred twenty-one million, nine hundred ninety-seven thousand, four hundred eighty-eight".