26844485849 has 4 divisors (see below), whose sum is σ = 27350985636. Its totient is φ = 26337986064.

The previous prime is 26844485821. The next prime is 26844485873. The reversal of 26844485849 is 94858444862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94858444862 = 2 ⋅47429222431.

It can be written as a sum of positive squares in 2 ways, for example, as 23053867225 + 3790618624 = 151835^2 + 61568^2 .

It is a cyclic number.

It is not a de Polignac number, because 26844485849 - 2²⁸ = 26576050393 is a prime.

It is a super-2 number, since 2×26844485849² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26844485791 and 26844485800.

It is not an unprimeable number, because it can be changed into a prime (26844485819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253249814 + ... + 253249919.

It is an arithmetic number, because the mean of its divisors is an integer number (6837746409).

Almost surely, 2^26844485849 is an apocalyptic number.

It is an amenable number.

26844485849 is a deficient number, since it is larger than the sum of its proper divisors (506499787).

26844485849 is an equidigital number, since it uses as much as digits as its factorization.

26844485849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506499786.

The product of its digits is 70778880, while the sum is 62.

The spelling of 26844485849 in words is "twenty-six billion, eight hundred forty-four million, four hundred eighty-five thousand, eight hundred forty-nine".