30691936912 has 40 divisors (see below), whose sum is σ = 73188468416. Its totient is φ = 12141864576.

The previous prime is 30691936841. The next prime is 30691936931. The reversal of 30691936912 is 21963919603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10538358 + ... + 10541269.

Almost surely, 2^30691936912 is an apocalyptic number.

It is an amenable number.

30691936912 is an abundant number, since it is smaller than the sum of its proper divisors (42496531504).

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

30691936912 is a wasteful number, since it uses less digits than its factorization.

30691936912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21079655 (or 21079649 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 49.

The spelling of 30691936912 in words is "thirty billion, six hundred ninety-one million, nine hundred thirty-six thousand, nine hundred twelve".