799993321220991 has 16 divisors (see below), whose sum is σ = 1072417412422400. Its totient is φ = 530451053225280.

The previous prime is 799993321220981. The next prime is 799993321220993. The reversal of 799993321220991 is 199022123399997.

It is not a de Polignac number, because 799993321220991 - 2³³ = 799984731286399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799993321220993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248122870 + ... + 251326371.

It is an arithmetic number, because the mean of its divisors is an integer number (67026088276400).

Almost surely, 2^{799993321220991} is an apocalyptic number.

799993321220991 is a deficient number, since it is larger than the sum of its proper divisors (272424091201409).

799993321220991 is a wasteful number, since it uses less digits than its factorization.

799993321220991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499452126.

The product of its (nonzero) digits is 267846264, while the sum is 75.

The spelling of 799993321220991 in words is "seven hundred ninety-nine trillion, nine hundred ninety-three billion, three hundred twenty-one million, two hundred twenty thousand, nine hundred ninety-one".