26133632281 has 3 divisors (see below), whose sum is σ = 26133793941. Its totient is φ = 26133470622.

The previous prime is 26133632267. The next prime is 26133632321. The reversal of 26133632281 is 18223633162.

The square root of 26133632281 is 161659.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 26133632281 - 2²⁹ = 25596761369 is a prime.

It is a super-2 number, since 2×26133632281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26133632281.

It is not an unprimeable number, because it can be changed into a prime (26133632201) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 80830 + ... + 242488.

It is an arithmetic number, because the mean of its divisors is an integer number (8711264647).

Almost surely, 2^26133632281 is an apocalyptic number.

26133632281 is the 161659-th square number.

26133632281 is the 80830-th centered octagonal number.

It is an amenable number.

26133632281 is a deficient number, since it is larger than the sum of its proper divisors (161660).

26133632281 is an frugal number, since it uses more digits than its factorization.

26133632281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323318 (or 161659 counting only the distinct ones).

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

The spelling of 26133632281 in words is "twenty-six billion, one hundred thirty-three million, six hundred thirty-two thousand, two hundred eighty-one".