30815530000 has 200 divisors, whose sum is σ = 79567030400. Its totient is φ = 11524032000.

The previous prime is 30815529991. The next prime is 30815530001. The reversal of 30815530000 is 3551803.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (30815530001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 15008974 + ... + 15011026.

It is an arithmetic number, because the mean of its divisors is an integer number (397835152).

Almost surely, 2^30815530000 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 30815530000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39783515200).

30815530000 is an abundant number, since it is smaller than the sum of its proper divisors (48751500400).

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

30815530000 is a wasteful number, since it uses less digits than its factorization.

30815530000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 30815530000 in words is "thirty billion, eight hundred fifteen million, five hundred thirty thousand".