26544089069 has 2 divisors, whose sum is σ = 26544089070. Its totient is φ = 26544089068.

The previous prime is 26544089053. The next prime is 26544089083. The reversal of 26544089069 is 96098044562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14991063844 + 11553025225 = 122438^2 + 107485^2 .

It is a cyclic number.

It is not a de Polignac number, because 26544089069 - 2⁴ = 26544089053 is a prime.

It is a super-2 number, since 2×26544089069² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 26544089069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26544089009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13272044534 + 13272044535.

It is an arithmetic number, because the mean of its divisors is an integer number (13272044535).

Almost surely, 2^26544089069 is an apocalyptic number.

It is an amenable number.

26544089069 is a deficient number, since it is larger than the sum of its proper divisors (1).

26544089069 is an equidigital number, since it uses as much as digits as its factorization.

26544089069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 53.

The spelling of 26544089069 in words is "twenty-six billion, five hundred forty-four million, eighty-nine thousand, sixty-nine".