27189384993 has 24 divisors (see below), whose sum is σ = 40461251040. Its totient is φ = 18045027000.

The previous prime is 27189384977. The next prime is 27189385001. The reversal of 27189384993 is 39948398172.

It is not a de Polignac number, because 27189384993 - 2⁴ = 27189384977 is a prime.

It is a super-2 number, since 2×27189384993² (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 27189384993.

It is not an unprimeable number, because it can be changed into a prime (27189384973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13573330 + ... + 13575332.

It is an arithmetic number, because the mean of its divisors is an integer number (1685885460).

Almost surely, 2^27189384993 is an apocalyptic number.

It is an amenable number.

27189384993 is a deficient number, since it is larger than the sum of its proper divisors (13271866047).

27189384993 is an frugal number, since it uses more digits than its factorization.

27189384993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266 (or 2257 counting only the distinct ones).

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

The spelling of 27189384993 in words is "twenty-seven billion, one hundred eighty-nine million, three hundred eighty-four thousand, nine hundred ninety-three".