26677265749 has 2 divisors, whose sum is σ = 26677265750. Its totient is φ = 26677265748.

The previous prime is 26677265743. The next prime is 26677265789. The reversal of 26677265749 is 94756277662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24895159524 + 1782106225 = 157782^2 + 42215^2 .

It is a cyclic number.

It is not a de Polignac number, because 26677265749 - 2¹⁹ = 26676741461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26677265743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13338632874 + 13338632875.

It is an arithmetic number, because the mean of its divisors is an integer number (13338632875).

Almost surely, 2^26677265749 is an apocalyptic number.

It is an amenable number.

26677265749 is a deficient number, since it is larger than the sum of its proper divisors (1).

26677265749 is an equidigital number, since it uses as much as digits as its factorization.

26677265749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53343360, while the sum is 61.

It can be divided in two parts, 2667 and 7265749, that added together give a square (7268416 = 2696²).

The spelling of 26677265749 in words is "twenty-six billion, six hundred seventy-seven million, two hundred sixty-five thousand, seven hundred forty-nine".