26661263711 has 4 divisors (see below), whose sum is σ = 26738097672. Its totient is φ = 26584429752.

The previous prime is 26661263701. The next prime is 26661263773. The reversal of 26661263711 is 11736216662.

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 26661263711 - 2⁶ = 26661263647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26661263701) 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, 38416460 + ... + 38417153.

It is an arithmetic number, because the mean of its divisors is an integer number (6684524418).

Almost surely, 2^26661263711 is an apocalyptic number.

26661263711 is a deficient number, since it is larger than the sum of its proper divisors (76833961).

26661263711 is an equidigital number, since it uses as much as digits as its factorization.

26661263711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76833960.

The product of its digits is 108864, while the sum is 41.

The spelling of 26661263711 in words is "twenty-six billion, six hundred sixty-one million, two hundred sixty-three thousand, seven hundred eleven".