30681186016 has 96 divisors (see below), whose sum is σ = 72501881760. Its totient is φ = 12626067456.

The previous prime is 30681185989. The next prime is 30681186091. The reversal of 30681186016 is 61068118603.

It is a super-4 number, since 4×30681186016⁴ (a number of 43 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30681186016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20200 + ... + 248536.

It is an arithmetic number, because the mean of its divisors is an integer number (755227935).

Almost surely, 2^30681186016 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 30681186016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36250940880).

30681186016 is an abundant number, since it is smaller than the sum of its proper divisors (41820695744).

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

30681186016 is a wasteful number, since it uses less digits than its factorization.

30681186016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228396 (or 228388 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 30681186016 in words is "thirty billion, six hundred eighty-one million, one hundred eighty-six thousand, sixteen".