30561797700 has 432 divisors, whose sum is σ = 112946520960. Its totient is φ = 6766848000.

The previous prime is 30561797687. The next prime is 30561797743. The reversal of 30561797700 is 779716503.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 46235370 + ... + 46236030.

It is an arithmetic number, because the mean of its divisors is an integer number (261450280).

Almost surely, 2^30561797700 is an apocalyptic number.

30561797700 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30561797700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56473260480).

30561797700 is an abundant number, since it is smaller than the sum of its proper divisors (82384723260).

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

30561797700 is a wasteful number, since it uses less digits than its factorization.

30561797700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 277830, while the sum is 45.

The spelling of 30561797700 in words is "thirty billion, five hundred sixty-one million, seven hundred ninety-seven thousand, seven hundred".