27147402547 has 4 divisors (see below), whose sum is σ = 27151405720. Its totient is φ = 27143399376.

The previous prime is 27147402517. The next prime is 27147402563. The reversal of 27147402547 is 74520474172.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27147402547 - 2¹⁹ = 27146878259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27147402517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1991397 + ... + 2004982.

It is an arithmetic number, because the mean of its divisors is an integer number (6787851430).

Almost surely, 2^27147402547 is an apocalyptic number.

27147402547 is a deficient number, since it is larger than the sum of its proper divisors (4003173).

27147402547 is an equidigital number, since it uses as much as digits as its factorization.

27147402547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003172.

The product of its (nonzero) digits is 439040, while the sum is 43.

The spelling of 27147402547 in words is "twenty-seven billion, one hundred forty-seven million, four hundred two thousand, five hundred forty-seven".