27775530505 has 16 divisors (see below), whose sum is σ = 34890421248.
Its totient is φ = 21200760000.
The previous prime is 27775530491. The next prime is 27775530509. The reversal of 27775530505 is 50503557772.
It is not a de Polignac number, because 27775530505 - 25 = 27775530473 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (27775530509) 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, 1250946 + ... + 1272955.
It is an arithmetic number, because the mean of its divisors is an integer number (2180651328).
Almost surely, 227775530505 is an apocalyptic number.
It is an amenable number.
27775530505 is a deficient number, since it is larger than the sum of its proper divisors (7114890743).
27775530505 is a wasteful number, since it uses less digits than its factorization.
27775530505 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2524008.
The product of its (nonzero) digits is 1286250, while the sum is 46.
The spelling of 27775530505 in words is "twenty-seven billion, seven hundred seventy-five million, five hundred thirty thousand, five hundred five".