27747682765 has 8 divisors (see below), whose sum is σ = 36324239328. Its totient is φ = 20180132880.

The previous prime is 27747682759. The next prime is 27747682769. The reversal of 27747682765 is 56728674772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27747682765 - 2²³ = 27739294157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27747682769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252251607 + ... + 252251716.

It is an arithmetic number, because the mean of its divisors is an integer number (4540529916).

Almost surely, 2^27747682765 is an apocalyptic number.

It is an amenable number.

27747682765 is a deficient number, since it is larger than the sum of its proper divisors (8576556563).

27747682765 is a wasteful number, since it uses less digits than its factorization.

27747682765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504503339.

The product of its digits is 55319040, while the sum is 61.

The spelling of 27747682765 in words is "twenty-seven billion, seven hundred forty-seven million, six hundred eighty-two thousand, seven hundred sixty-five".