27384389918 has 16 divisors (see below), whose sum is σ = 42661589760. Its totient is φ = 13173735576.

The previous prime is 27384389899. The next prime is 27384389941. The reversal of 27384389918 is 81998348372.

It is a super-2 number, since 2×27384389918² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2463296 + ... + 2474387.

It is an arithmetic number, because the mean of its divisors is an integer number (2666349360).

Almost surely, 2^27384389918 is an apocalyptic number.

27384389918 is a deficient number, since it is larger than the sum of its proper divisors (15277199842).

27384389918 is a wasteful number, since it uses less digits than its factorization.

27384389918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4937791.

The product of its digits is 20901888, while the sum is 62.

The spelling of 27384389918 in words is "twenty-seven billion, three hundred eighty-four million, three hundred eighty-nine thousand, nine hundred eighteen".