26266326631 has 4 divisors (see below), whose sum is σ = 26423610192. Its totient is φ = 26109043072.

The previous prime is 26266326607. The next prime is 26266326641. The reversal of 26266326631 is 13662366262.

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 26266326631 - 2⁵ = 26266326599 is a prime.

It is a super-2 number, since 2×26266326631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26266326641) 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, 78641530 + ... + 78641863.

It is an arithmetic number, because the mean of its divisors is an integer number (6605902548).

Almost surely, 2^26266326631 is an apocalyptic number.

26266326631 is a deficient number, since it is larger than the sum of its proper divisors (157283561).

26266326631 is a wasteful number, since it uses less digits than its factorization.

26266326631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157283560.

The product of its digits is 559872, while the sum is 43.

The spelling of 26266326631 in words is "twenty-six billion, two hundred sixty-six million, three hundred twenty-six thousand, six hundred thirty-one".