30561336080 has 80 divisors (see below), whose sum is σ = 77651690688. Its totient is φ = 11093568000.

The previous prime is 30561336079. The next prime is 30561336083. The reversal of 30561336080 is 8063316503.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 30561336080.

It is not an unprimeable number, because it can be changed into a prime (30561336083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472070 + ... + 532890.

Almost surely, 2^30561336080 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 30561336080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38825845344).

30561336080 is an abundant number, since it is smaller than the sum of its proper divisors (47090354608).

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

30561336080 is a wasteful number, since it uses less digits than its factorization.

30561336080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61416 (or 61410 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 30561336080 in words is "thirty billion, five hundred sixty-one million, three hundred thirty-six thousand, eighty".