27180749384 has 32 divisors (see below), whose sum is σ = 51938635320. Its totient is φ = 13330576896.

The previous prime is 27180749381. The next prime is 27180749411. The reversal of 27180749384 is 48394708172.

It can be written as a sum of positive squares in 4 ways, for example, as 21559048900 + 5621700484 = 146830^2 + 74978^2 .

It is a Harshad number since it is a multiple of its sum of digits (53).

It is not an unprimeable number, because it can be changed into a prime (27180749381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2875514 + ... + 2884950.

Almost surely, 2^27180749384 is an apocalyptic number.

It is an amenable number.

27180749384 is a deficient number, since it is larger than the sum of its proper divisors (24757885936).

27180749384 is a wasteful number, since it uses less digits than its factorization.

27180749384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16289 (or 16285 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 27180749384 in words is "twenty-seven billion, one hundred eighty million, seven hundred forty-nine thousand, three hundred eighty-four".