27771657377 has 16 divisors (see below), whose sum is σ = 28627603200. Its totient is φ = 26924684160.

The previous prime is 27771657337. The next prime is 27771657391. The reversal of 27771657377 is 77375617772.

It is not a de Polignac number, because 27771657377 - 2¹² = 27771653281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27771657337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5508824 + ... + 5513862.

It is an arithmetic number, because the mean of its divisors is an integer number (1789225200).

Almost surely, 2^27771657377 is an apocalyptic number.

It is an amenable number.

27771657377 is a deficient number, since it is larger than the sum of its proper divisors (855945823).

27771657377 is a wasteful number, since it uses less digits than its factorization.

27771657377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5896.

The product of its digits is 21176820, while the sum is 59.

The spelling of 27771657377 in words is "twenty-seven billion, seven hundred seventy-one million, six hundred fifty-seven thousand, three hundred seventy-seven".