799887767777280 has 4368 divisors, whose sum is σ = 3635708173159104. Its totient is φ = 167348876083200.

The previous prime is 799887767777243. The next prime is 799887767777281. The reversal of 799887767777280 is 82777767788997.

It is a tau number, because it is divible by the number of its divisors (4368).

It is not an unprimeable number, because it can be changed into a prime (799887767777281) by changing a digit.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 1436064214762 + ... + 1436064215318.

Almost surely, 2^{799887767777280} is an apocalyptic number.

799887767777280 is a gapful number since it is divisible by the number (70) 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 799887767777280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1817854086579552).

799887767777280 is an abundant number, since it is smaller than the sum of its proper divisors (2835820405381824).

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

799887767777280 is a wasteful number, since it uses less digits than its factorization.

799887767777280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782 (or 738 counting only the distinct ones).

The product of its (nonzero) digits is 409847703552, while the sum is 99.

The spelling of 799887767777280 in words is "seven hundred ninety-nine trillion, eight hundred eighty-seven billion, seven hundred sixty-seven million, seven hundred seventy-seven thousand, two hundred eighty".