26842787781 has 16 divisors (see below), whose sum is σ = 36668829120. Its totient is φ = 17456100480.

The previous prime is 26842787731. The next prime is 26842787827. The reversal of 26842787781 is 18778724862.

It is not a de Polignac number, because 26842787781 - 2³³ = 18252853189 is a prime.

It is a super-2 number, since 2×26842787781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26842787731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1130055 + ... + 1153563.

It is an arithmetic number, because the mean of its divisors is an integer number (2291801820).

Almost surely, 2^26842787781 is an apocalyptic number.

It is an amenable number.

26842787781 is a deficient number, since it is larger than the sum of its proper divisors (9826041339).

26842787781 is a wasteful number, since it uses less digits than its factorization.

26842787781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32836.

The product of its digits is 16859136, while the sum is 60.

The spelling of 26842787781 in words is "twenty-six billion, eight hundred forty-two million, seven hundred eighty-seven thousand, seven hundred eighty-one".