27773217243 has 6 divisors (see below), whose sum is σ = 40116869364. Its totient is φ = 18515478156.

The previous prime is 27773217221. The next prime is 27773217257. The reversal of 27773217243 is 34271237772.

It is not a de Polignac number, because 27773217243 - 2⁵ = 27773217211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27773217443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1542956505 + ... + 1542956522.

It is an arithmetic number, because the mean of its divisors is an integer number (6686144894).

Almost surely, 2^27773217243 is an apocalyptic number.

27773217243 is a deficient number, since it is larger than the sum of its proper divisors (12343652121).

27773217243 is a wasteful number, since it uses less digits than its factorization.

27773217243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3085913033 (or 3085913030 counting only the distinct ones).

The product of its digits is 691488, while the sum is 45.

The spelling of 27773217243 in words is "twenty-seven billion, seven hundred seventy-three million, two hundred seventeen thousand, two hundred forty-three".