12486864858 has 64 divisors (see below), whose sum is σ = 28264317312. Its totient is φ = 3651298560.

The previous prime is 12486864853. The next prime is 12486864931. The reversal of 12486864858 is 85846868421.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12486864851) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 73788 + ... + 174408.

It is an arithmetic number, because the mean of its divisors is an integer number (441629958).

Almost surely, 2^12486864858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12486864858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14132158656).

12486864858 is an abundant number, since it is smaller than the sum of its proper divisors (15777452454).

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

12486864858 is a wasteful number, since it uses less digits than its factorization.

12486864858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100719.

The product of its digits is 23592960, while the sum is 60.

The spelling of 12486864858 in words is "twelve billion, four hundred eighty-six million, eight hundred sixty-four thousand, eight hundred fifty-eight".