26829785881 has 4 divisors (see below), whose sum is σ = 26830249600. Its totient is φ = 26829322164.

The previous prime is 26829785869. The next prime is 26829785891. The reversal of 26829785881 is 18858792862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26829785881 - 2¹¹ = 26829783833 is a prime.

It is a super-2 number, since 2×26829785881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26829785891) 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, 130221 + ... + 265738.

It is an arithmetic number, because the mean of its divisors is an integer number (6707562400).

Almost surely, 2^26829785881 is an apocalyptic number.

It is an amenable number.

26829785881 is a deficient number, since it is larger than the sum of its proper divisors (463719).

26829785881 is an equidigital number, since it uses as much as digits as its factorization.

26829785881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463718.

The product of its digits is 30965760, while the sum is 64.

The spelling of 26829785881 in words is "twenty-six billion, eight hundred twenty-nine million, seven hundred eighty-five thousand, eight hundred eighty-one".