26978987363539 has 8 divisors (see below), whose sum is σ = 26984146946112. Its totient is φ = 26973828168000.

The previous prime is 26978987363507. The next prime is 26978987363563. The reversal of 26978987363539 is 93536378987962.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26978987363539 - 2⁵ = 26978987363507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26978987361539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165583237 + ... + 165746089.

It is an arithmetic number, because the mean of its divisors is an integer number (3373018368264).

Almost surely, 2^{26978987363539} is an apocalyptic number.

26978987363539 is a deficient number, since it is larger than the sum of its proper divisors (5159582573).

26978987363539 is a wasteful number, since it uses less digits than its factorization.

26978987363539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193517.

The product of its digits is 22221319680, while the sum is 85.

The spelling of 26978987363539 in words is "twenty-six trillion, nine hundred seventy-eight billion, nine hundred eighty-seven million, three hundred sixty-three thousand, five hundred thirty-nine".