26821830085 has 8 divisors (see below), whose sum is σ = 32187350520. Its totient is φ = 21456694464.

The previous prime is 26821830083. The next prime is 26821830107. The reversal of 26821830085 is 58003812862.

It can be written as a sum of positive squares in 4 ways, for example, as 13780646881 + 13041183204 = 117391^2 + 114198^2 .

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 26821830085 - 2¹ = 26821830083 is a prime.

It is a super-2 number, since 2×26821830085² (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 (26821830083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89859 + ... + 248431.

It is an arithmetic number, because the mean of its divisors is an integer number (4023418815).

Almost surely, 2^26821830085 is an apocalyptic number.

It is an amenable number.

26821830085 is a deficient number, since it is larger than the sum of its proper divisors (5365520435).

26821830085 is a wasteful number, since it uses less digits than its factorization.

26821830085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192407.

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 26821830085 in words is "twenty-six billion, eight hundred twenty-one million, eight hundred thirty thousand, eighty-five".