19724016696 has 32 divisors (see below), whose sum is σ = 50118406800. Its totient is φ = 6466890240.

The previous prime is 19724016619. The next prime is 19724016731. The reversal of 19724016696 is 69661042791.

It is a congruent 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, 6734881 + ... + 6737808.

Almost surely, 2^19724016696 is an apocalyptic number.

It is an amenable number.

19724016696 is an abundant number, since it is smaller than the sum of its proper divisors (30394390104).

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

19724016696 is a wasteful number, since it uses less digits than its factorization.

19724016696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13472759 (or 13472755 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 19724016696 in words is "nineteen billion, seven hundred twenty-four million, sixteen thousand, six hundred ninety-six".