19696935420 has 144 divisors (see below), whose sum is σ = 63347907168. Its totient is φ = 4936826880.

The previous prime is 19696935383. The next prime is 19696935421. The reversal of 19696935420 is 2453969691.

19696935420 is a `hidden beast` number, since 1 + 9 + 6 + 9 + 6 + 93 + 542 + 0 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19696935421) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2477692 + ... + 2485628.

It is an arithmetic number, because the mean of its divisors is an integer number (439916022).

Almost surely, 2^19696935420 is an apocalyptic number.

19696935420 is a gapful number since it is divisible by the number (10) 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 19696935420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31673953584).

19696935420 is an abundant number, since it is smaller than the sum of its proper divisors (43650971748).

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

19696935420 is a wasteful number, since it uses less digits than its factorization.

19696935420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8780 (or 8775 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 54.

The spelling of 19696935420 in words is "nineteen billion, six hundred ninety-six million, nine hundred thirty-five thousand, four hundred twenty".