19696913691 has 32 divisors (see below), whose sum is σ = 32337596928. Its totient is φ = 10384934400.

The previous prime is 19696913681. The next prime is 19696913699. The reversal of 19696913691 is 19631969691.

It is not a de Polignac number, because 19696913691 - 2¹⁴ = 19696897307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19696913699) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 644916 + ... + 674766.

It is an arithmetic number, because the mean of its divisors is an integer number (1010549904).

Almost surely, 2^19696913691 is an apocalyptic number.

19696913691 is a deficient number, since it is larger than the sum of its proper divisors (12640683237).

19696913691 is a wasteful number, since it uses less digits than its factorization.

19696913691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32291.

The product of its digits is 4251528, while the sum is 60.

The spelling of 19696913691 in words is "nineteen billion, six hundred ninety-six million, nine hundred thirteen thousand, six hundred ninety-one".