27081434158521 has 32 divisors (see below), whose sum is σ = 37821723310080. Its totient is φ = 17218834301376.

The previous prime is 27081434158511. The next prime is 27081434158549. The reversal of 27081434158521 is 12585143418072.

It is not a de Polignac number, because 27081434158521 - 2¹⁰ = 27081434157497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27081434158511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3686001 + ... + 8231006.

It is an arithmetic number, because the mean of its divisors is an integer number (1181928853440).

Almost surely, 2^{27081434158521} is an apocalyptic number.

It is an amenable number.

27081434158521 is a deficient number, since it is larger than the sum of its proper divisors (10740289151559).

27081434158521 is a wasteful number, since it uses less digits than its factorization.

27081434158521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11917453.

The product of its (nonzero) digits is 2150400, while the sum is 51.

The spelling of 27081434158521 in words is "twenty-seven trillion, eighty-one billion, four hundred thirty-four million, one hundred fifty-eight thousand, five hundred twenty-one".