30013173520 has 160 divisors (see below), whose sum is σ = 78555972096. Its totient is φ = 10570137600.

The previous prime is 30013173479. The next prime is 30013173523. The reversal of 30013173520 is 2537131003.

It is not an unprimeable number, because it can be changed into a prime (30013173523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4008180 + ... + 4015660.

Almost surely, 2^30013173520 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 30013173520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39277986048).

30013173520 is an abundant number, since it is smaller than the sum of its proper divisors (48542798576).

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

30013173520 is a wasteful number, since it uses less digits than its factorization.

30013173520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7649 (or 7643 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 25.

The spelling of 30013173520 in words is "thirty billion, thirteen million, one hundred seventy-three thousand, five hundred twenty".