27810500838 has 16 divisors (see below), whose sum is σ = 58892825520. Its totient is φ = 8724862976.

The previous prime is 27810500833. The next prime is 27810500867. The reversal of 27810500838 is 83800501872.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 27810500838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27810500831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136325883 + ... + 136326086.

It is an arithmetic number, because the mean of its divisors is an integer number (3680801595).

Almost surely, 2^27810500838 is an apocalyptic number.

27810500838 is an abundant number, since it is smaller than the sum of its proper divisors (31082324682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27810500838 is a wasteful number, since it uses less digits than its factorization.

27810500838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272651991.

The product of its (nonzero) digits is 107520, while the sum is 42.

The spelling of 27810500838 in words is "twenty-seven billion, eight hundred ten million, five hundred thousand, eight hundred thirty-eight".