30980018688 has 80 divisors (see below), whose sum is σ = 82799361216. Its totient is φ = 10293309440.

The previous prime is 30980018687. The next prime is 30980018689. The reversal of 30980018688 is 88681008903.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30980018687) and next prime (30980018689).

It is a self number, because there is not a number n which added to its sum of digits gives 30980018688.

It is not an unprimeable number, because it can be changed into a prime (30980018683) 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, 445270 + ... + 510122.

Almost surely, 2^30980018688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30980018688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41399680608).

30980018688 is an abundant number, since it is smaller than the sum of its proper divisors (51819342528).

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

30980018688 is an equidigital number, since it uses as much as digits as its factorization.

30980018688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65185 (or 65169 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 51.

The spelling of 30980018688 in words is "thirty billion, nine hundred eighty million, eighteen thousand, six hundred eighty-eight".