799557814221 has 8 divisors (see below), whose sum is σ = 1112428263360. Its totient is φ = 509862953952.

The previous prime is 799557814213. The next prime is 799557814229. The reversal of 799557814221 is 122418755997.

799557814221 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (799557814213) and next prime (799557814229).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 799557814221 - 2³ = 799557814213 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799557814229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5793897136 + ... + 5793897273.

It is an arithmetic number, because the mean of its divisors is an integer number (139053532920).

Almost surely, 2^799557814221 is an apocalyptic number.

It is an amenable number.

799557814221 is a deficient number, since it is larger than the sum of its proper divisors (312870449139).

799557814221 is a wasteful number, since it uses less digits than its factorization.

799557814221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11587794435.

The product of its digits is 12700800, while the sum is 60.

The spelling of 799557814221 in words is "seven hundred ninety-nine billion, five hundred fifty-seven million, eight hundred fourteen thousand, two hundred twenty-one".