27754585161 has 4 divisors (see below), whose sum is σ = 37006113552. Its totient is φ = 18503056772.

The previous prime is 27754585153. The next prime is 27754585189. The reversal of 27754585161 is 16158545772.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27754585161 - 2³ = 27754585153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27754585121) 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, 4625764191 + ... + 4625764196.

It is an arithmetic number, because the mean of its divisors is an integer number (9251528388).

Almost surely, 2^27754585161 is an apocalyptic number.

It is an amenable number.

27754585161 is a deficient number, since it is larger than the sum of its proper divisors (9251528391).

27754585161 is an equidigital number, since it uses as much as digits as its factorization.

27754585161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9251528390.

The product of its digits is 2352000, while the sum is 51.

The spelling of 27754585161 in words is "twenty-seven billion, seven hundred fifty-four million, five hundred eighty-five thousand, one hundred sixty-one".