16391106864858 has 24 divisors (see below), whose sum is σ = 36033342365664. Its totient is φ = 4967002080040.

The previous prime is 16391106864857. The next prime is 16391106864889. The reversal of 16391106864858 is 85846860119361.

16391106864858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (16391106864857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11288640366 + ... + 11288641817.

It is an arithmetic number, because the mean of its divisors is an integer number (1501389265236).

Almost surely, 2^{16391106864858} is an apocalyptic number.

16391106864858 is an abundant number, since it is smaller than the sum of its proper divisors (19642235500806).

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

16391106864858 is a wasteful number, since it uses less digits than its factorization.

16391106864858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22577282210 (or 22577282199 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 66.

The spelling of 16391106864858 in words is "sixteen trillion, three hundred ninety-one billion, one hundred six million, eight hundred sixty-four thousand, eight hundred fifty-eight".