26958893456591 has 4 divisors (see below), whose sum is σ = 26991025630800. Its totient is φ = 26926761282384.

The previous prime is 26958893456563. The next prime is 26958893456597. The reversal of 26958893456591 is 19565439885962.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26958893456591 - 2⁶ = 26958893456527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26958893456597) 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, 16066085846 + ... + 16066087523.

It is an arithmetic number, because the mean of its divisors is an integer number (6747756407700).

Almost surely, 2^{26958893456591} is an apocalyptic number.

26958893456591 is a deficient number, since it is larger than the sum of its proper divisors (32132174209).

26958893456591 is an equidigital number, since it uses as much as digits as its factorization.

26958893456591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32132174208.

The product of its digits is 5038848000, while the sum is 80.

The spelling of 26958893456591 in words is "twenty-six trillion, nine hundred fifty-eight billion, eight hundred ninety-three million, four hundred fifty-six thousand, five hundred ninety-one".