26434606040321 has 2 divisors, whose sum is σ = 26434606040322. Its totient is φ = 26434606040320.

The previous prime is 26434606040261. The next prime is 26434606040327. The reversal of 26434606040321 is 12304060643462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13600156489921 + 12834449550400 = 3687839^2 + 3582520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26434606040321 is a prime.

It is not a weakly prime, because it can be changed into another prime (26434606040327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13217303020160 + 13217303020161.

It is an arithmetic number, because the mean of its divisors is an integer number (13217303020161).

Almost surely, 2^{26434606040321} is an apocalyptic number.

It is an amenable number.

26434606040321 is a deficient number, since it is larger than the sum of its proper divisors (1).

26434606040321 is an equidigital number, since it uses as much as digits as its factorization.

26434606040321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 41.

Adding to 26434606040321 its reverse (12304060643462), we get a palindrome (38738666683783).

The spelling of 26434606040321 in words is "twenty-six trillion, four hundred thirty-four billion, six hundred six million, forty thousand, three hundred twenty-one".