26005026221018 has 64 divisors (see below), whose sum is σ = 43281162401568. Its totient is φ = 11640679464960.

The previous prime is 26005026221017. The next prime is 26005026221029. The reversal of 26005026221018 is 81012262050062.

It can be written as a sum of positive squares in 16 ways, for example, as 2544206833249 + 23460819387769 = 1595057^2 + 4843637^2 .

It is a super-2 number, since 2×26005026221018² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26005026221017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2832478388 + ... + 2832487568.

Almost surely, 2^{26005026221018} is an apocalyptic number.

26005026221018 is a deficient number, since it is larger than the sum of its proper divisors (17276136180550).

26005026221018 is a wasteful number, since it uses less digits than its factorization.

26005026221018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18307.

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 26005026221018 in words is "twenty-six trillion, five billion, twenty-six million, two hundred twenty-one thousand, eighteen".