26871081566 has 32 divisors (see below), whose sum is σ = 46539852480. Its totient is φ = 11397689856.

The previous prime is 26871081563. The next prime is 26871081577. The reversal of 26871081566 is 66518017862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26871081563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1109660 + ... + 1133616.

It is an arithmetic number, because the mean of its divisors is an integer number (1454370390).

Almost surely, 2^26871081566 is an apocalyptic number.

26871081566 is a deficient number, since it is larger than the sum of its proper divisors (19668770914).

26871081566 is a wasteful number, since it uses less digits than its factorization.

26871081566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24788.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 26871081566 in words is "twenty-six billion, eight hundred seventy-one million, eighty-one thousand, five hundred sixty-six".