26423664247 has 8 divisors (see below), whose sum is σ = 27979511616. Its totient is φ = 24867985152.

The previous prime is 26423664233. The next prime is 26423664251. The reversal of 26423664247 is 74246632462.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-26423664247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26423664197 and 26423664206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26423664257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437563 + ... + 494275.

It is an arithmetic number, because the mean of its divisors is an integer number (3497438952).

Almost surely, 2^26423664247 is an apocalyptic number.

26423664247 is a deficient number, since it is larger than the sum of its proper divisors (1555847369).

26423664247 is a wasteful number, since it uses less digits than its factorization.

26423664247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84137.

The product of its digits is 2322432, while the sum is 46.

The spelling of 26423664247 in words is "twenty-six billion, four hundred twenty-three million, six hundred sixty-four thousand, two hundred forty-seven".