30561221260 has 12 divisors (see below), whose sum is σ = 64178564688. Its totient is φ = 12224488496.

The previous prime is 30561221233. The next prime is 30561221263. The reversal of 30561221260 is 6212216503.

It is not an unprimeable number, because it can be changed into a prime (30561221263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 764030512 + ... + 764030551.

It is an arithmetic number, because the mean of its divisors is an integer number (5348213724).

Almost surely, 2^30561221260 is an apocalyptic number.

It is an amenable number.

30561221260 is an abundant number, since it is smaller than the sum of its proper divisors (33617343428).

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

30561221260 is a wasteful number, since it uses less digits than its factorization.

30561221260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528061072 (or 1528061070 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 30561221260 its reverse (6212216503), we get a palindrome (36773437763).

The spelling of 30561221260 in words is "thirty billion, five hundred sixty-one million, two hundred twenty-one thousand, two hundred sixty".