26040848021 has 2 divisors, whose sum is σ = 26040848022. Its totient is φ = 26040848020.

The previous prime is 26040848003. The next prime is 26040848023. The reversal of 26040848021 is 12084804062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16579395121 + 9461452900 = 128761^2 + 97270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26040848021 is a prime.

Together with 26040848023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26040848023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13020424010 + 13020424011.

It is an arithmetic number, because the mean of its divisors is an integer number (13020424011).

Almost surely, 2^26040848021 is an apocalyptic number.

It is an amenable number.

26040848021 is a deficient number, since it is larger than the sum of its proper divisors (1).

26040848021 is an equidigital number, since it uses as much as digits as its factorization.

26040848021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24576, while the sum is 35.

The spelling of 26040848021 in words is "twenty-six billion, forty million, eight hundred forty-eight thousand, twenty-one".