27787665741 has 64 divisors (see below), whose sum is σ = 44132117760. Its totient is φ = 15359016960.

The previous prime is 27787665733. The next prime is 27787665743. The reversal of 27787665741 is 14756678772.

It is not a de Polignac number, because 27787665741 - 2³ = 27787665733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27787665743) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5331945 + ... + 5337153.

It is an arithmetic number, because the mean of its divisors is an integer number (689564340).

Almost surely, 2^27787665741 is an apocalyptic number.

It is an amenable number.

27787665741 is a deficient number, since it is larger than the sum of its proper divisors (16344452019).

27787665741 is a wasteful number, since it uses less digits than its factorization.

27787665741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5534.

The product of its digits is 27659520, while the sum is 60.

The spelling of 27787665741 in words is "twenty-seven billion, seven hundred eighty-seven million, six hundred sixty-five thousand, seven hundred forty-one".