27825080777 has 4 divisors (see below), whose sum is σ = 29965471620. Its totient is φ = 25684689936.

The previous prime is 27825080761. The next prime is 27825080797. The reversal of 27825080777 is 77708052872.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8850293776 + 18974787001 = 94076^2 + 137749^2 .

It is a cyclic number.

It is not a de Polignac number, because 27825080777 - 2⁴ = 27825080761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27825080707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1070195402 + ... + 1070195427.

It is an arithmetic number, because the mean of its divisors is an integer number (7491367905).

Almost surely, 2^27825080777 is an apocalyptic number.

It is an amenable number.

27825080777 is a deficient number, since it is larger than the sum of its proper divisors (2140390843).

27825080777 is a wasteful number, since it uses less digits than its factorization.

27825080777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140390842.

The product of its (nonzero) digits is 3073280, while the sum is 53.

The spelling of 27825080777 in words is "twenty-seven billion, eight hundred twenty-five million, eighty thousand, seven hundred seventy-seven".