27805505506 has 32 divisors (see below), whose sum is σ = 43792721280. Its totient is φ = 13215624576.

The previous prime is 27805505471. The next prime is 27805505543. The reversal of 27805505506 is 60550550872.

It is a super-2 number, since 2×27805505506² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14579805 + ... + 14581711.

It is an arithmetic number, because the mean of its divisors is an integer number (1368522540).

Almost surely, 2^27805505506 is an apocalyptic number.

27805505506 is a deficient number, since it is larger than the sum of its proper divisors (15987215774).

27805505506 is a wasteful number, since it uses less digits than its factorization.

27805505506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738.

The product of its (nonzero) digits is 420000, while the sum is 43.

The spelling of 27805505506 in words is "twenty-seven billion, eight hundred five million, five hundred five thousand, five hundred six".