26809486847 has 48 divisors (see below), whose sum is σ = 32275461120. Its totient is φ = 22117043520.

The previous prime is 26809486841. The next prime is 26809486861. The reversal of 26809486847 is 74868490862.

It is not a de Polignac number, because 26809486847 - 2¹⁰ = 26809485823 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 26809486847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26809486841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 55050038 + ... + 55050524.

It is an arithmetic number, because the mean of its divisors is an integer number (672405440).

Almost surely, 2^26809486847 is an apocalyptic number.

26809486847 is a deficient number, since it is larger than the sum of its proper divisors (5465974273).

26809486847 is a wasteful number, since it uses less digits than its factorization.

26809486847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044 (or 1033 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 62.

The spelling of 26809486847 in words is "twenty-six billion, eight hundred nine million, four hundred eighty-six thousand, eight hundred forty-seven".