26328818897 has 2 divisors, whose sum is σ = 26328818898. Its totient is φ = 26328818896.

The previous prime is 26328818801. The next prime is 26328818921. The reversal of 26328818897 is 79881882362.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26035758736 + 293060161 = 161356^2 + 17119^2 .

It is a cyclic number.

It is not a de Polignac number, because 26328818897 - 2¹² = 26328814801 is a prime.

It is a super-2 number, since 2×26328818897² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26328812897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13164409448 + 13164409449.

It is an arithmetic number, because the mean of its divisors is an integer number (13164409449).

Almost surely, 2^26328818897 is an apocalyptic number.

It is an amenable number.

26328818897 is a deficient number, since it is larger than the sum of its proper divisors (1).

26328818897 is an equidigital number, since it uses as much as digits as its factorization.

26328818897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18579456, while the sum is 62.

The spelling of 26328818897 in words is "twenty-six billion, three hundred twenty-eight million, eight hundred eighteen thousand, eight hundred ninety-seven".