19999524048 has 240 divisors, whose sum is σ = 61128587520. Its totient is φ = 5617382400.

The previous prime is 19999524031. The next prime is 19999524133. The reversal of 19999524048 is 84042599991.

It is a junction number, because it is equal to n+sod(n) for n = 19999523982 and 19999524000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46402393 + ... + 46402823.

It is an arithmetic number, because the mean of its divisors is an integer number (254702448).

Almost surely, 2^19999524048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19999524048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30564293760).

19999524048 is an abundant number, since it is smaller than the sum of its proper divisors (41129063472).

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

19999524048 is a wasteful number, since it uses less digits than its factorization.

19999524048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 733 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 60.

The spelling of 19999524048 in words is "nineteen billion, nine hundred ninety-nine million, five hundred twenty-four thousand, forty-eight".