30661122500 has 30 divisors (see below), whose sum is σ = 67049748150. Its totient is φ = 12264448000.

The previous prime is 30661122469. The next prime is 30661122551. The reversal of 30661122500 is 522116603.

It can be written as a sum of positive squares in 5 ways, for example, as 5666777284 + 24994345216 = 75278^2 + 158096^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30661122500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6129725 + ... + 6134724.

It is an arithmetic number, because the mean of its divisors is an integer number (2234991605).

Almost surely, 2^30661122500 is an apocalyptic number.

It is an amenable number.

30661122500 is an abundant number, since it is smaller than the sum of its proper divisors (36388625650).

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

30661122500 is a wasteful number, since it uses less digits than its factorization.

30661122500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12264473 (or 12264456 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The spelling of 30661122500 in words is "thirty billion, six hundred sixty-one million, one hundred twenty-two thousand, five hundred".