26491275659 has 8 divisors (see below), whose sum is σ = 26643118320. Its totient is φ = 26339493600.

The previous prime is 26491275641. The next prime is 26491275683. The reversal of 26491275659 is 95657219462.

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-26491275659 is a prime.

It is a super-2 number, since 2×26491275659² (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 (26491275619) 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, 1090457 + ... + 1114485.

It is an arithmetic number, because the mean of its divisors is an integer number (3330389790).

Almost surely, 2^26491275659 is an apocalyptic number.

26491275659 is a deficient number, since it is larger than the sum of its proper divisors (151842661).

26491275659 is a wasteful number, since it uses less digits than its factorization.

26491275659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30301.

The product of its digits is 8164800, while the sum is 56.

The spelling of 26491275659 in words is "twenty-six billion, four hundred ninety-one million, two hundred seventy-five thousand, six hundred fifty-nine".