19647698079 has 16 divisors (see below), whose sum is σ = 26963136512. Its totient is φ = 12716893728.

The previous prime is 19647698053. The next prime is 19647698111. The reversal of 19647698079 is 97089674691.

It is not a de Polignac number, because 19647698079 - 2⁵ = 19647698047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19647698009) 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, 139759 + ... + 242544.

It is an arithmetic number, because the mean of its divisors is an integer number (1685196032).

Almost surely, 2^19647698079 is an apocalyptic number.

19647698079 is a deficient number, since it is larger than the sum of its proper divisors (7315438433).

19647698079 is a wasteful number, since it uses less digits than its factorization.

19647698079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382806.

The product of its (nonzero) digits is 41150592, while the sum is 66.

The spelling of 19647698079 in words is "nineteen billion, six hundred forty-seven million, six hundred ninety-eight thousand, seventy-nine".