26311315013 has 8 divisors (see below), whose sum is σ = 26837835096. Its totient is φ = 25787865600.

The previous prime is 26311315003. The next prime is 26311315111. The reversal of 26311315013 is 31051311362.

It can be written as a sum of positive squares in 4 ways, for example, as 3338759524 + 22972555489 = 57782^2 + 151567^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 26311315013 - 2¹² = 26311310917 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 (26311315003) 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, 750356 + ... + 784637.

It is an arithmetic number, because the mean of its divisors is an integer number (3354729387).

Almost surely, 2^26311315013 is an apocalyptic number.

It is an amenable number.

26311315013 is a deficient number, since it is larger than the sum of its proper divisors (526520083).

26311315013 is a wasteful number, since it uses less digits than its factorization.

26311315013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535335.

The product of its (nonzero) digits is 1620, while the sum is 26.

Adding to 26311315013 its reverse (31051311362), we get a palindrome (57362626375).

The spelling of 26311315013 in words is "twenty-six billion, three hundred eleven million, three hundred fifteen thousand, thirteen".