30708191616 has 128 divisors (see below), whose sum is σ = 83097360000. Its totient is φ = 10044850176.

The previous prime is 30708191599. The next prime is 30708191617. The reversal of 30708191616 is 61619180703.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30708191617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21046695 + ... + 21048153.

It is an arithmetic number, because the mean of its divisors is an integer number (649198125).

Almost surely, 2^30708191616 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 30708191616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41548680000).

30708191616 is an abundant number, since it is smaller than the sum of its proper divisors (52389168384).

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

30708191616 is a wasteful number, since it uses less digits than its factorization.

30708191616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464 (or 2452 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 30708191616 in words is "thirty billion, seven hundred eight million, one hundred ninety-one thousand, six hundred sixteen".