27093870981 has 16 divisors (see below), whose sum is σ = 40217947200. Its totient is φ = 18027085104.

The previous prime is 27093870949. The next prime is 27093871001. The reversal of 27093870981 is 18907839072.

It is not a de Polignac number, because 27093870981 - 2⁵ = 27093870949 is a prime.

It is a super-2 number, since 2×27093870981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27093875981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 971991 + ... + 999476.

It is an arithmetic number, because the mean of its divisors is an integer number (2513621700).

Almost surely, 2^27093870981 is an apocalyptic number.

It is an amenable number.

27093870981 is a deficient number, since it is larger than the sum of its proper divisors (13124076219).

27093870981 is a wasteful number, since it uses less digits than its factorization.

27093870981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971985 (or 1971979 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 27093870981 in words is "twenty-seven billion, ninety-three million, eight hundred seventy thousand, nine hundred eighty-one".