26449706069 has 2 divisors, whose sum is σ = 26449706070. Its totient is φ = 26449706068.

The previous prime is 26449706053. The next prime is 26449706119. The reversal of 26449706069 is 96060794462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17937244900 + 8512461169 = 133930^2 + 92263^2 .

It is a cyclic number.

It is not a de Polignac number, because 26449706069 - 2⁴ = 26449706053 is a prime.

It is a super-2 number, since 2×26449706069² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26449706069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26449706039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13224853034 + 13224853035.

It is an arithmetic number, because the mean of its divisors is an integer number (13224853035).

Almost surely, 2^26449706069 is an apocalyptic number.

It is an amenable number.

26449706069 is a deficient number, since it is larger than the sum of its proper divisors (1).

26449706069 is an equidigital number, since it uses as much as digits as its factorization.

26449706069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 53.

The spelling of 26449706069 in words is "twenty-six billion, four hundred forty-nine million, seven hundred six thousand, sixty-nine".