27916692217 has 4 divisors (see below), whose sum is σ = 27928468816. Its totient is φ = 27904915620.

The previous prime is 27916692197. The next prime is 27916692227. The reversal of 27916692217 is 71229661972.

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 27916692217 - 2¹¹ = 27916690169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27916692227) 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, 5884743 + ... + 5889484.

It is an arithmetic number, because the mean of its divisors is an integer number (6982117204).

Almost surely, 2^27916692217 is an apocalyptic number.

It is an amenable number.

27916692217 is a deficient number, since it is larger than the sum of its proper divisors (11776599).

27916692217 is a wasteful number, since it uses less digits than its factorization.

27916692217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11776598.

The product of its digits is 1143072, while the sum is 52.

The spelling of 27916692217 in words is "twenty-seven billion, nine hundred sixteen million, six hundred ninety-two thousand, two hundred seventeen".