27840550831 has 4 divisors (see below), whose sum is σ = 29305843000. Its totient is φ = 26375258664.

The previous prime is 27840550811. The next prime is 27840550841. The reversal of 27840550831 is 13805504872.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27840550831 - 2⁵ = 27840550799 is a prime.

It is a super-2 number, since 2×27840550831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27840550811) 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 3 ways as a sum of consecutive naturals, for example, 732646056 + ... + 732646093.

It is an arithmetic number, because the mean of its divisors is an integer number (7326460750).

Almost surely, 2^27840550831 is an apocalyptic number.

27840550831 is a deficient number, since it is larger than the sum of its proper divisors (1465292169).

27840550831 is a wasteful number, since it uses less digits than its factorization.

27840550831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465292168.

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 27840550831 in words is "twenty-seven billion, eight hundred forty million, five hundred fifty thousand, eight hundred thirty-one".