27973871820349 has 16 divisors (see below), whose sum is σ = 34507807586560. Its totient is φ = 22082756025600.

The previous prime is 27973871820281. The next prime is 27973871820361. The reversal of 27973871820349 is 94302817837972.

It is a cyclic number.

It is not a de Polignac number, because 27973871820349 - 2¹¹ = 27973871818301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27973871820049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350079852 + ... + 350159749.

It is an arithmetic number, because the mean of its divisors is an integer number (2156737974160).

Almost surely, 2^{27973871820349} is an apocalyptic number.

It is an amenable number.

27973871820349 is a deficient number, since it is larger than the sum of its proper divisors (6533935766211).

27973871820349 is a wasteful number, since it uses less digits than its factorization.

27973871820349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700240060.

The product of its (nonzero) digits is 256048128, while the sum is 70.

The spelling of 27973871820349 in words is "twenty-seven trillion, nine hundred seventy-three billion, eight hundred seventy-one million, eight hundred twenty thousand, three hundred forty-nine".