27380043081 has 12 divisors (see below), whose sum is σ = 41630475120. Its totient is φ = 17292658680.

The previous prime is 27380043079. The next prime is 27380043091. The reversal of 27380043081 is 18034008372.

27380043081 is a `hidden beast` number, since 2 + 73 + 80 + 0 + 430 + 81 = 666.

It is not a de Polignac number, because 27380043081 - 2¹ = 27380043079 is a prime.

It is a super-2 number, since 2×27380043081² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (27380043011) 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, 80058435 + ... + 80058776.

It is an arithmetic number, because the mean of its divisors is an integer number (3469206260).

Almost surely, 2^27380043081 is an apocalyptic number.

It is an amenable number.

27380043081 is a deficient number, since it is larger than the sum of its proper divisors (14250432039).

27380043081 is a wasteful number, since it uses less digits than its factorization.

27380043081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160117236 (or 160117233 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 27380043081 in words is "twenty-seven billion, three hundred eighty million, forty-three thousand, eighty-one".