26806507121 has 4 divisors (see below), whose sum is σ = 26810348544. Its totient is φ = 26802665700.

The previous prime is 26806507051. The next prime is 26806507183. The reversal of 26806507121 is 12170560862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26806507121 - 2³⁰ = 25732765297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26806507421) 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, 1910225 + ... + 1924206.

It is an arithmetic number, because the mean of its divisors is an integer number (6702587136).

Almost surely, 2^26806507121 is an apocalyptic number.

It is an amenable number.

26806507121 is a deficient number, since it is larger than the sum of its proper divisors (3841423).

26806507121 is an equidigital number, since it uses as much as digits as its factorization.

26806507121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841422.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 26806507121 in words is "twenty-six billion, eight hundred six million, five hundred seven thousand, one hundred twenty-one".