19695935312 has 80 divisors (see below), whose sum is σ = 40540690944. Its totient is φ = 9253440000.

The previous prime is 19695935297. The next prime is 19695935353. The reversal of 19695935312 is 21353959691.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12863987 + ... + 12865517.

Almost surely, 2^19695935312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19695935312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20270345472).

19695935312 is an abundant number, since it is smaller than the sum of its proper divisors (20844755632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19695935312 is a wasteful number, since it uses less digits than its factorization.

19695935312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308 (or 2302 counting only the distinct ones).

The product of its digits is 1968300, while the sum is 53.

The spelling of 19695935312 in words is "nineteen billion, six hundred ninety-five million, nine hundred thirty-five thousand, three hundred twelve".