19920825792 has 168 divisors, whose sum is σ = 65772036096. Its totient is φ = 5646703104.

The previous prime is 19920825763. The next prime is 19920825851. The reversal of 19920825792 is 29752802991.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 492613 + ... + 531515.

Almost surely, 2^19920825792 is an apocalyptic number.

19920825792 is a gapful number since it is divisible by the number (12) 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 19920825792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32886018048).

19920825792 is an abundant number, since it is smaller than the sum of its proper divisors (45851210304).

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

19920825792 is a wasteful number, since it uses less digits than its factorization.

19920825792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39055 (or 39042 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The spelling of 19920825792 in words is "nineteen billion, nine hundred twenty million, eight hundred twenty-five thousand, seven hundred ninety-two".