30681737736 has 128 divisors (see below), whose sum is σ = 84668976000. Its totient is φ = 9261567744.

The previous prime is 30681737701. The next prime is 30681737743. The reversal of 30681737736 is 63773718603.

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 31 ways as a sum of consecutive naturals, for example, 2789095 + ... + 2800073.

It is an arithmetic number, because the mean of its divisors is an integer number (661476375).

Almost surely, 2^30681737736 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 30681737736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42334488000).

30681737736 is an abundant number, since it is smaller than the sum of its proper divisors (53987238264).

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

30681737736 is a wasteful number, since it uses less digits than its factorization.

30681737736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11080 (or 11050 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 51.

The spelling of 30681737736 in words is "thirty billion, six hundred eighty-one million, seven hundred thirty-seven thousand, seven hundred thirty-six".