26443354634 has 4 divisors (see below), whose sum is σ = 39665031954. Its totient is φ = 13221677316.

The previous prime is 26443354627. The next prime is 26443354643. The reversal of 26443354634 is 43645334462.

It is a happy number.

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., 25732972225 + 710382409 = 160415^2 + 26653^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610838657 + ... + 6610838660.

Almost surely, 2^26443354634 is an apocalyptic number.

26443354634 is a deficient number, since it is larger than the sum of its proper divisors (13221677320).

26443354634 is a wasteful number, since it uses less digits than its factorization.

26443354634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13221677319.

The product of its digits is 2488320, while the sum is 44.

The spelling of 26443354634 in words is "twenty-six billion, four hundred forty-three million, three hundred fifty-four thousand, six hundred thirty-four".