26849851817 has 8 divisors (see below), whose sum is σ = 27497610432. Its totient is φ = 26209582000.

The previous prime is 26849851801. The next prime is 26849851823. The reversal of 26849851817 is 71815894862.

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 26849851817 - 2⁴ = 26849851801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26849853817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1864943 + ... + 1879284.

It is an arithmetic number, because the mean of its divisors is an integer number (3437201304).

Almost surely, 2^26849851817 is an apocalyptic number.

It is an amenable number.

26849851817 is a deficient number, since it is larger than the sum of its proper divisors (647758615).

26849851817 is a wasteful number, since it uses less digits than its factorization.

26849851817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3744399.

The product of its digits is 7741440, while the sum is 59.

The spelling of 26849851817 in words is "twenty-six billion, eight hundred forty-nine million, eight hundred fifty-one thousand, eight hundred seventeen".