27810646253 has 12 divisors (see below), whose sum is σ = 30538647648. Its totient is φ = 25309786320.

The previous prime is 27810646217. The next prime is 27810646271. The reversal of 27810646253 is 35264601872.

It is not a de Polignac number, because 27810646253 - 2¹² = 27810642157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27810642253) 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 11 ways as a sum of consecutive naturals, for example, 1146875 + ... + 1170872.

It is an arithmetic number, because the mean of its divisors is an integer number (2544887304).

Almost surely, 2^27810646253 is an apocalyptic number.

It is an amenable number.

27810646253 is a deficient number, since it is larger than the sum of its proper divisors (2728001395).

27810646253 is a wasteful number, since it uses less digits than its factorization.

27810646253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317844 (or 2317831 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 27810646253 in words is "twenty-seven billion, eight hundred ten million, six hundred forty-six thousand, two hundred fifty-three".