27648487465 has 4 divisors (see below), whose sum is σ = 33178184964. Its totient is φ = 22118789968.

The previous prime is 27648487457. The next prime is 27648487511. The reversal of 27648487465 is 56478484672.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16748501056 + 10899986409 = 129416^2 + 104403^2 .

It is a cyclic number.

It is not a de Polignac number, because 27648487465 - 2³ = 27648487457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2764848742 + ... + 2764848751.

It is an arithmetic number, because the mean of its divisors is an integer number (8294546241).

Almost surely, 2^27648487465 is an apocalyptic number.

It is an amenable number.

27648487465 is a deficient number, since it is larger than the sum of its proper divisors (5529697499).

27648487465 is an equidigital number, since it uses as much as digits as its factorization.

27648487465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5529697498.

The product of its digits is 72253440, while the sum is 61.

The spelling of 27648487465 in words is "twenty-seven billion, six hundred forty-eight million, four hundred eighty-seven thousand, four hundred sixty-five".