27716977918 has 8 divisors (see below), whose sum is σ = 47514819312. Its totient is φ = 11878704816.

The previous prime is 27716977901. The next prime is 27716977921. The reversal of 27716977918 is 81977961772.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×27716977918² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27716977918.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989892055 + ... + 989892082.

It is an arithmetic number, because the mean of its divisors is an integer number (5939352414).

Almost surely, 2^27716977918 is an apocalyptic number.

27716977918 is a deficient number, since it is larger than the sum of its proper divisors (19797841394).

27716977918 is a wasteful number, since it uses less digits than its factorization.

27716977918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979784146.

The product of its digits is 18670176, while the sum is 64.

The spelling of 27716977918 in words is "twenty-seven billion, seven hundred sixteen million, nine hundred seventy-seven thousand, nine hundred eighteen".