26364040321 has 2 divisors, whose sum is σ = 26364040322. Its totient is φ = 26364040320.

The previous prime is 26364040279. The next prime is 26364040333. The reversal of 26364040321 is 12304046362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16106401921 + 10257638400 = 126911^2 + 101280^2 .

It is a cyclic number.

It is not a de Polignac number, because 26364040321 - 2²¹ = 26361943169 is a prime.

It is not a weakly prime, because it can be changed into another prime (26364040361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13182020160 + 13182020161.

It is an arithmetic number, because the mean of its divisors is an integer number (13182020161).

Almost surely, 2^26364040321 is an apocalyptic number.

It is an amenable number.

26364040321 is a deficient number, since it is larger than the sum of its proper divisors (1).

26364040321 is an equidigital number, since it uses as much as digits as its factorization.

26364040321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 26364040321 its reverse (12304046362), we get a palindrome (38668086683).

The spelling of 26364040321 in words is "twenty-six billion, three hundred sixty-four million, forty thousand, three hundred twenty-one".