27384389919 has 12 divisors (see below), whose sum is σ = 39562185000. Its totient is φ = 18253049904.

The previous prime is 27384389899. The next prime is 27384389941. The reversal of 27384389919 is 91998348372.

It is not a de Polignac number, because 27384389919 - 2¹⁵ = 27384357151 is a prime.

It is a super-2 number, since 2×27384389919² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27384389999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212889 + ... + 316370.

It is an arithmetic number, because the mean of its divisors is an integer number (3296848750).

Almost surely, 2^27384389919 is an apocalyptic number.

27384389919 is a deficient number, since it is larger than the sum of its proper divisors (12177795081).

27384389919 is a wasteful number, since it uses less digits than its factorization.

27384389919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535014 (or 535011 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The spelling of 27384389919 in words is "twenty-seven billion, three hundred eighty-four million, three hundred eighty-nine thousand, nine hundred nineteen".