27877447705 has 8 divisors (see below), whose sum is σ = 35420757192. Its totient is φ = 20990078208.

The previous prime is 27877447699. The next prime is 27877447711. The reversal of 27877447705 is 50774477872.

It is an interprime number because it is at equal distance from previous prime (27877447699) and next prime (27877447711).

It can be written as a sum of positive squares in 4 ways, for example, as 893471881 + 26983975824 = 29891^2 + 164268^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 27877447705 - 2⁹ = 27877447193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27877447705.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163984902 + ... + 163985071.

It is an arithmetic number, because the mean of its divisors is an integer number (4427594649).

Almost surely, 2^27877447705 is an apocalyptic number.

It is an amenable number.

27877447705 is a deficient number, since it is larger than the sum of its proper divisors (7543309487).

27877447705 is a wasteful number, since it uses less digits than its factorization.

27877447705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327969995.

The product of its (nonzero) digits is 21512960, while the sum is 58.

The spelling of 27877447705 in words is "twenty-seven billion, eight hundred seventy-seven million, four hundred forty-seven thousand, seven hundred five".