26271319645 has 8 divisors (see below), whose sum is σ = 31527016920. Its totient is φ = 21016100160.

The previous prime is 26271319639. The next prime is 26271319649. The reversal of 26271319645 is 54691317262.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11644352281 + 14626967364 = 107909^2 + 120942^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26271319645 - 2³ = 26271319637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26271319595 and 26271319604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26271319649) 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, 15355 + ... + 229735.

It is an arithmetic number, because the mean of its divisors is an integer number (3940877115).

Almost surely, 2^26271319645 is an apocalyptic number.

It is an amenable number.

26271319645 is a deficient number, since it is larger than the sum of its proper divisors (5255697275).

26271319645 is a wasteful number, since it uses less digits than its factorization.

26271319645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238895.

The product of its digits is 544320, while the sum is 46.

The spelling of 26271319645 in words is "twenty-six billion, two hundred seventy-one million, three hundred nineteen thousand, six hundred forty-five".