27800213717 has 8 divisors (see below), whose sum is σ = 29759373600. Its totient is φ = 25890652944.

The previous prime is 27800213663. The next prime is 27800213719. The reversal of 27800213717 is 71731200872.

It is a happy number.

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 27800213717 - 2²⁴ = 27783436501 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 (27800213719) 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, 12398618 + ... + 12400859.

It is an arithmetic number, because the mean of its divisors is an integer number (3719921700).

Almost surely, 2^27800213717 is an apocalyptic number.

It is an amenable number.

27800213717 is a deficient number, since it is larger than the sum of its proper divisors (1959159883).

27800213717 is a wasteful number, since it uses less digits than its factorization.

27800213717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24799555.

The product of its (nonzero) digits is 32928, while the sum is 38.

The spelling of 27800213717 in words is "twenty-seven billion, eight hundred million, two hundred thirteen thousand, seven hundred seventeen".