20319869304 has 160 divisors (see below), whose sum is σ = 65374848000. Its totient is φ = 5776246080.

The previous prime is 20319869261. The next prime is 20319869351. The reversal of 20319869304 is 40396891302.

It is a happy number.

20319869304 is a `hidden beast` number, since 20 + 319 + 8 + 6 + 9 + 304 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20319869304.

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 39 ways as a sum of consecutive naturals, for example, 891409 + ... + 913919.

It is an arithmetic number, because the mean of its divisors is an integer number (408592800).

Almost surely, 2^20319869304 is an apocalyptic number.

20319869304 is a gapful number since it is divisible by the number (24) 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 20319869304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32687424000).

20319869304 is an abundant number, since it is smaller than the sum of its proper divisors (45054978696).

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

20319869304 is a wasteful number, since it uses less digits than its factorization.

20319869304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22735 (or 22722 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 20319869304 in words is "twenty billion, three hundred nineteen million, eight hundred sixty-nine thousand, three hundred four".