26231813263 has 4 divisors (see below), whose sum is σ = 27774861120. Its totient is φ = 24688765408.

The previous prime is 26231813249. The next prime is 26231813273. The reversal of 26231813263 is 36231813262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36231813262 = 2 ⋅18115906631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26231813263 is a prime.

It is a super-3 number, since 3×26231813263³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26231813273) 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, 771523903 + ... + 771523936.

It is an arithmetic number, because the mean of its divisors is an integer number (6943715280).

Almost surely, 2^26231813263 is an apocalyptic number.

26231813263 is a deficient number, since it is larger than the sum of its proper divisors (1543047857).

26231813263 is a wasteful number, since it uses less digits than its factorization.

26231813263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543047856.

The product of its digits is 62208, while the sum is 37.

Subtracting 26231813263 from its reverse (36231813262), we obtain a palindrome (9999999999).

The spelling of 26231813263 in words is "twenty-six billion, two hundred thirty-one million, eight hundred thirteen thousand, two hundred sixty-three".