12426635258 has 4 divisors (see below), whose sum is σ = 18639952890. Its totient is φ = 6213317628.

The previous prime is 12426635233. The next prime is 12426635261. The reversal of 12426635258 is 85253662421.

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., 12331436209 + 95199049 = 111047^2 + 9757^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3106658813 + ... + 3106658816.

Almost surely, 2^12426635258 is an apocalyptic number.

12426635258 is a deficient number, since it is larger than the sum of its proper divisors (6213317632).

12426635258 is an equidigital number, since it uses as much as digits as its factorization.

12426635258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6213317631.

The product of its digits is 691200, while the sum is 44.

The spelling of 12426635258 in words is "twelve billion, four hundred twenty-six million, six hundred thirty-five thousand, two hundred fifty-eight".