26089202002081 has 3 divisors (see below), whose sum is σ = 26089207109841. Its totient is φ = 26089196894322.

The previous prime is 26089202002057. The next prime is 26089202002111. The reversal of 26089202002081 is 18020020298062.

It is a happy number.

The square root of 26089202002081 is 5107759.

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 26089202002081 - 2¹¹ = 26089202000033 is a prime.

It is a super-2 number, since 2×26089202002081² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26089202002021) 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, 2553880 + ... + 7661638.

It is an arithmetic number, because the mean of its divisors is an integer number (8696402369947).

Almost surely, 2^{26089202002081} is an apocalyptic number.

26089202002081 is the 5107759-th square number.

26089202002081 is the 2553880-th centered octagonal number.

It is an amenable number.

26089202002081 is a deficient number, since it is larger than the sum of its proper divisors (5107760).

26089202002081 is an frugal number, since it uses more digits than its factorization.

26089202002081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10215518 (or 5107759 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 26089202002081 in words is "twenty-six trillion, eighty-nine billion, two hundred two million, two thousand, eighty-one".