26999398068089 has 4 divisors (see below), whose sum is σ = 27099026843520. Its totient is φ = 26899769292660.

The previous prime is 26999398068079. The next prime is 26999398068109. The reversal of 26999398068089 is 98086089399962.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26999398068089 - 2⁴ = 26999398068073 is a prime.

It is a super-2 number, since 2×26999398068089² (a number of 28 digits) contains 22 as substring.

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 26999398068089.

It is not an unprimeable number, because it can be changed into a prime (26999398068079) 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, 49814387309 + ... + 49814387850.

It is an arithmetic number, because the mean of its divisors is an integer number (6774756710880).

Almost surely, 2^{26999398068089} is an apocalyptic number.

It is an amenable number.

26999398068089 is a deficient number, since it is larger than the sum of its proper divisors (99628775431).

26999398068089 is an equidigital number, since it uses as much as digits as its factorization.

26999398068089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99628775430.

The product of its (nonzero) digits is 6530347008, while the sum is 86.

The spelling of 26999398068089 in words is "twenty-six trillion, nine hundred ninety-nine billion, three hundred ninety-eight million, sixty-eight thousand, eighty-nine".