26404571330897 has 2 divisors, whose sum is σ = 26404571330898. Its totient is φ = 26404571330896.

The previous prime is 26404571330827. The next prime is 26404571330927. The reversal of 26404571330897 is 79803317540462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14697286359616 + 11707284971281 = 3833704^2 + 3421591^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26404571330897 is a prime.

It is not a weakly prime, because it can be changed into another prime (26404571330827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13202285665448 + 13202285665449.

It is an arithmetic number, because the mean of its divisors is an integer number (13202285665449).

It is a 1-persistent number, because it is pandigital, but 2⋅26404571330897 = 52809142661794 is not.

Almost surely, 2^{26404571330897} is an apocalyptic number.

It is an amenable number.

26404571330897 is a deficient number, since it is larger than the sum of its proper divisors (1).

26404571330897 is an equidigital number, since it uses as much as digits as its factorization.

26404571330897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 26404571330897 in words is "twenty-six trillion, four hundred four billion, five hundred seventy-one million, three hundred thirty thousand, eight hundred ninety-seven".