13263631426 has 4 divisors (see below), whose sum is σ = 19895447142. Its totient is φ = 6631815712.

The previous prime is 13263631417. The next prime is 13263631427. The reversal of 13263631426 is 62413636231.

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., 7233332401 + 6030299025 = 85049^2 + 77655^2 .

It is not an unprimeable number, because it can be changed into a prime (13263631427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3315907855 + ... + 3315907858.

Almost surely, 2^13263631426 is an apocalyptic number.

13263631426 is a deficient number, since it is larger than the sum of its proper divisors (6631815716).

13263631426 is an equidigital number, since it uses as much as digits as its factorization.

13263631426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6631815715.

The product of its digits is 93312, while the sum is 37.

The spelling of 13263631426 in words is "thirteen billion, two hundred sixty-three million, six hundred thirty-one thousand, four hundred twenty-six".