26609233121 has 4 divisors (see below), whose sum is σ = 26612194452. Its totient is φ = 26606271792.

The previous prime is 26609233087. The next prime is 26609233169. The reversal of 26609233121 is 12133290662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12738282496 + 13870950625 = 112864^2 + 117775^2 .

It is a cyclic number.

It is not a de Polignac number, because 26609233121 - 2¹⁸ = 26608970977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26609233171) 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, 1467146 + ... + 1485171.

It is an arithmetic number, because the mean of its divisors is an integer number (6653048613).

Almost surely, 2^26609233121 is an apocalyptic number.

It is an amenable number.

26609233121 is a deficient number, since it is larger than the sum of its proper divisors (2961331).

26609233121 is an equidigital number, since it uses as much as digits as its factorization.

26609233121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2961330.

The product of its (nonzero) digits is 23328, while the sum is 35.

The spelling of 26609233121 in words is "twenty-six billion, six hundred nine million, two hundred thirty-three thousand, one hundred twenty-one".