12174216858 has 24 divisors (see below), whose sum is σ = 26418645396. Its totient is φ = 4051737600.

The previous prime is 12174216829. The next prime is 12174216913. The reversal of 12174216858 is 85861247121.

12174216858 is a `hidden beast` number, since 1 + 217 + 421 + 6 + 8 + 5 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12134564649 + 39652209 = 110157^2 + 6297^2 .

It is a super-2 number, since 2×12174216858² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 516033 + ... + 539108.

Almost surely, 2^12174216858 is an apocalyptic number.

12174216858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12174216858 is an abundant number, since it is smaller than the sum of its proper divisors (14244428538).

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

12174216858 is a wasteful number, since it uses less digits than its factorization.

12174216858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055790 (or 1055787 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The spelling of 12174216858 in words is "twelve billion, one hundred seventy-four million, two hundred sixteen thousand, eight hundred fifty-eight".