27105420571 has 4 divisors (see below), whose sum is σ = 27131509600. Its totient is φ = 27079331544.

The previous prime is 27105420557. The next prime is 27105420613. The reversal of 27105420571 is 17502450172.

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 27105420571 - 2³¹ = 24957936923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27105420071) 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, 13042956 + ... + 13045033.

It is an arithmetic number, because the mean of its divisors is an integer number (6782877400).

Almost surely, 2^27105420571 is an apocalyptic number.

27105420571 is a deficient number, since it is larger than the sum of its proper divisors (26089029).

27105420571 is a wasteful number, since it uses less digits than its factorization.

27105420571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26089028.

The product of its (nonzero) digits is 19600, while the sum is 34.

The spelling of 27105420571 in words is "twenty-seven billion, one hundred five million, four hundred twenty thousand, five hundred seventy-one".