27912581084 has 12 divisors (see below), whose sum is σ = 50531397000. Its totient is φ = 13475039088.

The previous prime is 27912581077. The next prime is 27912581093. The reversal of 27912581084 is 48018521972.

It is a super-2 number, since 2×27912581084² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120312734 + ... + 120312965.

It is an arithmetic number, because the mean of its divisors is an integer number (4210949750).

Almost surely, 2^27912581084 is an apocalyptic number.

It is an amenable number.

27912581084 is a deficient number, since it is larger than the sum of its proper divisors (22618815916).

27912581084 is a wasteful number, since it uses less digits than its factorization.

27912581084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240625732 (or 240625730 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 27912581084 in words is "twenty-seven billion, nine hundred twelve million, five hundred eighty-one thousand, eighty-four".