12426805858 has 4 divisors (see below), whose sum is σ = 18640208790. Its totient is φ = 6213402928.

The previous prime is 12426805823. The next prime is 12426805871. The reversal of 12426805858 is 85850862421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9300094969 + 3126710889 = 96437^2 + 55917^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3106701463 + ... + 3106701466.

Almost surely, 2^12426805858 is an apocalyptic number.

12426805858 is a deficient number, since it is larger than the sum of its proper divisors (6213402932).

12426805858 is an equidigital number, since it uses as much as digits as its factorization.

12426805858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6213402931.

The product of its (nonzero) digits is 1228800, while the sum is 49.

The spelling of 12426805858 in words is "twelve billion, four hundred twenty-six million, eight hundred five thousand, eight hundred fifty-eight".