19617047979992 has 16 divisors (see below), whose sum is σ = 36884421694800. Its totient is φ = 9781202194720.

The previous prime is 19617047979989. The next prime is 19617047980003. The reversal of 19617047979992 is 29997974071691.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3415221359 + ... + 3415227102.

It is an arithmetic number, because the mean of its divisors is an integer number (2305276355925).

Almost surely, 2^{19617047979992} is an apocalyptic number.

It is an amenable number.

19617047979992 is a deficient number, since it is larger than the sum of its proper divisors (17267373714808).

19617047979992 is a wasteful number, since it uses less digits than its factorization.

19617047979992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6830448826 (or 6830448822 counting only the distinct ones).

The product of its (nonzero) digits is 972182736, while the sum is 80.

The spelling of 19617047979992 in words is "nineteen trillion, six hundred seventeen billion, forty-seven million, nine hundred seventy-nine thousand, nine hundred ninety-two".