19439133696 has 132 divisors (see below), whose sum is σ = 56207541312. Its totient is φ = 6470774784.

The previous prime is 19439133691. The next prime is 19439133697. The reversal of 19439133696 is 69633193491.

19439133696 is a `hidden beast` number, since 19 + 439 + 133 + 69 + 6 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (19439133691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12597501 + ... + 12599043.

Almost surely, 2^19439133696 is an apocalyptic number.

19439133696 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 19439133696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28103770656).

19439133696 is an abundant number, since it is smaller than the sum of its proper divisors (36768407616).

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

19439133696 is a wasteful number, since it uses less digits than its factorization.

19439133696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2936 (or 2915 counting only the distinct ones).

The product of its digits is 2834352, while the sum is 54.

The spelling of 19439133696 in words is "nineteen billion, four hundred thirty-nine million, one hundred thirty-three thousand, six hundred ninety-six".