19993240772 has 12 divisors (see below), whose sum is σ = 34991092416. Its totient is φ = 9995785800.

The previous prime is 19993240739. The next prime is 19993240807. The reversal of 19993240772 is 27704239991.

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, 153104 + ... + 251847.

It is an arithmetic number, because the mean of its divisors is an integer number (2915924368).

Almost surely, 2^19993240772 is an apocalyptic number.

It is an amenable number.

19993240772 is a deficient number, since it is larger than the sum of its proper divisors (14997851644).

19993240772 is a wasteful number, since it uses less digits than its factorization.

19993240772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417298 (or 417296 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 53.

The spelling of 19993240772 in words is "nineteen billion, nine hundred ninety-three million, two hundred forty thousand, seven hundred seventy-two".