19997104058 has 16 divisors (see below), whose sum is σ = 30540887520. Its totient is φ = 9817383600.

The previous prime is 19997104009. The next prime is 19997104069. The reversal of 19997104058 is 85040179991.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

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, 73868 + ... + 213191.

It is an arithmetic number, because the mean of its divisors is an integer number (1908805470).

Almost surely, 2^19997104058 is an apocalyptic number.

19997104058 is a deficient number, since it is larger than the sum of its proper divisors (10543783462).

19997104058 is a wasteful number, since it uses less digits than its factorization.

19997104058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287693.

The product of its (nonzero) digits is 816480, while the sum is 53.

The spelling of 19997104058 in words is "nineteen billion, nine hundred ninety-seven million, one hundred four thousand, fifty-eight".