26681741738 has 8 divisors (see below), whose sum is σ = 40087480932. Its totient is φ = 13319248096.

The previous prime is 26681741731. The next prime is 26681741747. The reversal of 26681741738 is 83714718662.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16077479209 + 10604262529 = 126797^2 + 102977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 26681741738.

It is not an unprimeable number, because it can be changed into a prime (26681741731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10809845 + ... + 10812312.

Almost surely, 2^26681741738 is an apocalyptic number.

26681741738 is a deficient number, since it is larger than the sum of its proper divisors (13405739194).

26681741738 is a wasteful number, since it uses less digits than its factorization.

26681741738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21622776.

The product of its digits is 2709504, while the sum is 53.

The spelling of 26681741738 in words is "twenty-six billion, six hundred eighty-one million, seven hundred forty-one thousand, seven hundred thirty-eight".