27758942273 has 4 divisors (see below), whose sum is σ = 28229432880. Its totient is φ = 27288451668.

The previous prime is 27758942261. The next prime is 27758942339. The reversal of 27758942273 is 37224985772.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27758942273 - 2⁶ = 27758942209 is a prime.

It is a super-2 number, since 2×27758942273² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27758942773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235245215 + ... + 235245332.

It is an arithmetic number, because the mean of its divisors is an integer number (7057358220).

Almost surely, 2^27758942273 is an apocalyptic number.

It is an amenable number.

27758942273 is a deficient number, since it is larger than the sum of its proper divisors (470490607).

27758942273 is an equidigital number, since it uses as much as digits as its factorization.

27758942273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470490606.

The product of its digits is 11854080, while the sum is 56.

The spelling of 27758942273 in words is "twenty-seven billion, seven hundred fifty-eight million, nine hundred forty-two thousand, two hundred seventy-three".