27695477377 has 4 divisors (see below), whose sum is σ = 28046053120. Its totient is φ = 27344901636.

The previous prime is 27695477351. The next prime is 27695477387. The reversal of 27695477377 is 77377459672.

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 a de Polignac number, because none of the positive numbers 2^k-27695477377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27695477387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175287753 + ... + 175287910.

It is an arithmetic number, because the mean of its divisors is an integer number (7011513280).

Almost surely, 2^27695477377 is an apocalyptic number.

It is an amenable number.

27695477377 is a deficient number, since it is larger than the sum of its proper divisors (350575743).

27695477377 is an equidigital number, since it uses as much as digits as its factorization.

27695477377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350575742.

The product of its digits is 108909360, while the sum is 64.

The spelling of 27695477377 in words is "twenty-seven billion, six hundred ninety-five million, four hundred seventy-seven thousand, three hundred seventy-seven".