26456643611 has 4 divisors (see below), whose sum is σ = 26618954472. Its totient is φ = 26294332752.

The previous prime is 26456643607. The next prime is 26456643623. The reversal of 26456643611 is 11634665462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26456643611 - 2² = 26456643607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26456643641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81155186 + ... + 81155511.

It is an arithmetic number, because the mean of its divisors is an integer number (6654738618).

Almost surely, 2^26456643611 is an apocalyptic number.

26456643611 is a deficient number, since it is larger than the sum of its proper divisors (162310861).

26456643611 is a wasteful number, since it uses less digits than its factorization.

26456643611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162310860.

The product of its digits is 622080, while the sum is 44.

The spelling of 26456643611 in words is "twenty-six billion, four hundred fifty-six million, six hundred forty-three thousand, six hundred eleven".