27775252845 has 24 divisors (see below), whose sum is σ = 48152456352. Its totient is φ = 14810796000.

The previous prime is 27775252819. The next prime is 27775252849. The reversal of 27775252845 is 54825257772.

27775252845 is a `hidden beast` number, since 2 + 7 + 7 + 75 + 2 + 528 + 45 = 666.

It is not a de Polignac number, because 27775252845 - 2²² = 27771058541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27775252791 and 27775252800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27775252849) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210550 + ... + 316040.

It is an arithmetic number, because the mean of its divisors is an integer number (2006352348).

Almost surely, 2^27775252845 is an apocalyptic number.

It is an amenable number.

27775252845 is a deficient number, since it is larger than the sum of its proper divisors (20377203507).

27775252845 is a wasteful number, since it uses less digits than its factorization.

27775252845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111353 (or 111350 counting only the distinct ones).

The product of its digits is 10976000, while the sum is 54.

The spelling of 27775252845 in words is "twenty-seven billion, seven hundred seventy-five million, two hundred fifty-two thousand, eight hundred forty-five".