26168318985 has 16 divisors (see below), whose sum is σ = 42086254464. Its totient is φ = 13884122112.

The previous prime is 26168318971. The next prime is 26168319019. The reversal of 26168318985 is 58981386162.

It is not a de Polignac number, because 26168318985 - 2¹³ = 26168310793 is a prime.

It is a super-2 number, since 2×26168318985² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4516677 + ... + 4522466.

It is an arithmetic number, because the mean of its divisors is an integer number (2630390904).

Almost surely, 2^26168318985 is an apocalyptic number.

It is an amenable number.

26168318985 is a deficient number, since it is larger than the sum of its proper divisors (15917935479).

26168318985 is a wasteful number, since it uses less digits than its factorization.

26168318985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9039344.

The product of its digits is 4976640, while the sum is 57.

The spelling of 26168318985 in words is "twenty-six billion, one hundred sixty-eight million, three hundred eighteen thousand, nine hundred eighty-five".