806879317122 has 18 divisors (see below), whose sum is σ = 1748246777667. Its totient is φ = 268958502036.

The previous prime is 806879317099. The next prime is 806879317147. The reversal of 806879317122 is 221713978608.

It is a happy number.

806879317122 is a `hidden beast` number, since 80 + 68 + 79 + 317 + 122 = 666.

806879317122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 403439658561 + 403439658561 = 635169^2 + 635169^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=635169.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3705153 + ... + 3916875.

Almost surely, 2^806879317122 is an apocalyptic number.

806879317122 is an abundant number, since it is smaller than the sum of its proper divisors (941367460545).

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

806879317122 is an frugal number, since it uses more digits than its factorization.

806879317122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423454 (or 211728 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 806879317122 in words is "eight hundred six billion, eight hundred seventy-nine million, three hundred seventeen thousand, one hundred twenty-two".