19736197696 has 56 divisors (see below), whose sum is σ = 41137905024. Its totient is φ = 9376435200.

The previous prime is 19736197609. The next prime is 19736197739. The reversal of 19736197696 is 69679163791.

It is a Harshad number since it is a multiple of its sum of digits (64).

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, 177876 + ... + 266668.

Almost surely, 2^19736197696 is an apocalyptic number.

19736197696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19736197696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20568952512).

19736197696 is an abundant number, since it is smaller than the sum of its proper divisors (21401707328).

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

19736197696 is a wasteful number, since it uses less digits than its factorization.

19736197696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88979 (or 88969 counting only the distinct ones).

The product of its digits is 23147208, while the sum is 64.

The spelling of 19736197696 in words is "nineteen billion, seven hundred thirty-six million, one hundred ninety-seven thousand, six hundred ninety-six".