12536332426 has 4 divisors (see below), whose sum is σ = 18804498642. Its totient is φ = 6268166212.

The previous prime is 12536332399. The next prime is 12536332427. The reversal of 12536332426 is 62423363521.

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., 7932574225 + 4603758201 = 89065^2 + 67851^2 .

It is not an unprimeable number, because it can be changed into a prime (12536332427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3134083105 + ... + 3134083108.

Almost surely, 2^12536332426 is an apocalyptic number.

12536332426 is a deficient number, since it is larger than the sum of its proper divisors (6268166216).

12536332426 is an equidigital number, since it uses as much as digits as its factorization.

12536332426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6268166215.

The product of its digits is 155520, while the sum is 37.

Adding to 12536332426 its reverse (62423363521), we get a palindrome (74959695947).

The spelling of 12536332426 in words is "twelve billion, five hundred thirty-six million, three hundred thirty-two thousand, four hundred twenty-six".