26220660026849 has 16 divisors (see below), whose sum is σ = 27168166782720. Its totient is φ = 25276060992000.

The previous prime is 26220660026801. The next prime is 26220660026933. The reversal of 26220660026849 is 94862006602262.

It is a cyclic number.

It is not a de Polignac number, because 26220660026849 - 2¹⁶ = 26220659961313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26220660026849.

It is not an unprimeable number, because it can be changed into a prime (26220660026749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82667249 + ... + 82983825.

It is an arithmetic number, because the mean of its divisors is an integer number (1698010423920).

Almost surely, 2^{26220660026849} is an apocalyptic number.

26220660026849 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

26220660026849 is a deficient number, since it is larger than the sum of its proper divisors (947506755871).

26220660026849 is a wasteful number, since it uses less digits than its factorization.

26220660026849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321160.

The product of its (nonzero) digits is 5971968, while the sum is 53.

The spelling of 26220660026849 in words is "twenty-six trillion, two hundred twenty billion, six hundred sixty million, twenty-six thousand, eight hundred forty-nine".