858997799858 has 32 divisors (see below), whose sum is σ = 1407712131072. Its totient is φ = 389876374800.

The previous prime is 858997799843. The next prime is 858997799911.

858997799858 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46215635 + ... + 46234217.

It is an arithmetic number, because the mean of its divisors is an integer number (43991004096).

Almost surely, 2^858997799858 is an apocalyptic number.

858997799858 is a deficient number, since it is larger than the sum of its proper divisors (548714331214).

858997799858 is a wasteful number, since it uses less digits than its factorization.

858997799858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21590.

The product of its digits is 32920473600, while the sum is 92.

The spelling of 858997799858 in words is "eight hundred fifty-eight billion, nine hundred ninety-seven million, seven hundred ninety-nine thousand, eight hundred fifty-eight".