26087870849 has 2 divisors, whose sum is σ = 26087870850. Its totient is φ = 26087870848.

The previous prime is 26087870843. The next prime is 26087870917. The reversal of 26087870849 is 94807878062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23765305600 + 2322565249 = 154160^2 + 48193^2 .

It is a cyclic number.

It is not a de Polignac number, because 26087870849 - 2²⁸ = 25819435393 is a prime.

It is not a weakly prime, because it can be changed into another prime (26087870843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13043935424 + 13043935425.

It is an arithmetic number, because the mean of its divisors is an integer number (13043935425).

Almost surely, 2^26087870849 is an apocalyptic number.

It is an amenable number.

26087870849 is a deficient number, since it is larger than the sum of its proper divisors (1).

26087870849 is an equidigital number, since it uses as much as digits as its factorization.

26087870849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10838016, while the sum is 59.

The spelling of 26087870849 in words is "twenty-six billion, eighty-seven million, eight hundred seventy thousand, eight hundred forty-nine".