26739618049 has 2 divisors, whose sum is σ = 26739618050. Its totient is φ = 26739618048.

The previous prime is 26739618029. The next prime is 26739618119. The reversal of 26739618049 is 94081693762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22296462400 + 4443155649 = 149320^2 + 66657^2 .

It is a cyclic number.

It is not a de Polignac number, because 26739618049 - 2⁷ = 26739617921 is a prime.

It is not a weakly prime, because it can be changed into another prime (26739618029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13369809024 + 13369809025.

It is an arithmetic number, because the mean of its divisors is an integer number (13369809025).

Almost surely, 2^26739618049 is an apocalyptic number.

It is an amenable number.

26739618049 is a deficient number, since it is larger than the sum of its proper divisors (1).

26739618049 is an equidigital number, since it uses as much as digits as its factorization.

26739618049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 26739618049 in words is "twenty-six billion, seven hundred thirty-nine million, six hundred eighteen thousand, forty-nine".