26891111137 has 8 divisors (see below), whose sum is σ = 29359260000. Its totient is φ = 24426879360.

The previous prime is 26891111131. The next prime is 26891111167. The reversal of 26891111137 is 73111119862.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26891111137 is a prime.

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 26891111137.

It is not an unprimeable number, because it can be changed into a prime (26891111131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 964903 + ... + 992380.

It is an arithmetic number, because the mean of its divisors is an integer number (3669907500).

Almost surely, 2^26891111137 is an apocalyptic number.

It is an amenable number.

26891111137 is a deficient number, since it is larger than the sum of its proper divisors (2468148863).

26891111137 is a wasteful number, since it uses less digits than its factorization.

26891111137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1958543.

The product of its digits is 18144, while the sum is 40.

The spelling of 26891111137 in words is "twenty-six billion, eight hundred ninety-one million, one hundred eleven thousand, one hundred thirty-seven".