26749895681 has 8 divisors (see below), whose sum is σ = 26966200224. Its totient is φ = 26533896480.

The previous prime is 26749895659. The next prime is 26749895701. The reversal of 26749895681 is 18659894762.

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-26749895681 is a prime.

It is a super-2 number, since 2×26749895681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26749895611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101246 + ... + 252488.

It is an arithmetic number, because the mean of its divisors is an integer number (3370775028).

Almost surely, 2^26749895681 is an apocalyptic number.

It is an amenable number.

26749895681 is a deficient number, since it is larger than the sum of its proper divisors (216304543).

26749895681 is a wasteful number, since it uses less digits than its factorization.

26749895681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152671.

The product of its digits is 52254720, while the sum is 65.

The spelling of 26749895681 in words is "twenty-six billion, seven hundred forty-nine million, eight hundred ninety-five thousand, six hundred eighty-one".