799128799920 has 640 divisors, whose sum is σ = 3065268096000. Its totient is φ = 189739376640.

The previous prime is 799128799883. The next prime is 799128799927. The reversal of 799128799920 is 29997821997.

799128799920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (799128799927) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 230494027 + ... + 230497493.

It is an arithmetic number, because the mean of its divisors is an integer number (4789481400).

Almost surely, 2^799128799920 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 799128799920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1532634048000).

799128799920 is an abundant number, since it is smaller than the sum of its proper divisors (2266139296080).

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

799128799920 is a wasteful number, since it uses less digits than its factorization.

799128799920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3698 (or 3686 counting only the distinct ones).

The product of its (nonzero) digits is 92588832, while the sum is 72.

The spelling of 799128799920 in words is "seven hundred ninety-nine billion, one hundred twenty-eight million, seven hundred ninety-nine thousand, nine hundred twenty".