26317264681 has 8 divisors (see below), whose sum is σ = 27867836160. Its totient is φ = 24766970688.

The previous prime is 26317264663. The next prime is 26317264693. The reversal of 26317264681 is 18646271362.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26317264681 is a prime.

It is a super-2 number, since 2×26317264681² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26317264661) 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, 144820 + ... + 271306.

It is an arithmetic number, because the mean of its divisors is an integer number (3483479520).

Almost surely, 2^26317264681 is an apocalyptic number.

It is an amenable number.

26317264681 is a deficient number, since it is larger than the sum of its proper divisors (1550571479).

26317264681 is a wasteful number, since it uses less digits than its factorization.

26317264681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138743.

The product of its digits is 580608, while the sum is 46.

The spelling of 26317264681 in words is "twenty-six billion, three hundred seventeen million, two hundred sixty-four thousand, six hundred eighty-one".