27750805064 has 16 divisors (see below), whose sum is σ = 53301851820. Its totient is φ = 13536977920.

The previous prime is 27750805057. The next prime is 27750805087. The reversal of 27750805064 is 46050805772.

It can be written as a sum of positive squares in 2 ways, for example, as 27585888100 + 164916964 = 166090^2 + 12842^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42302729 + ... + 42303384.

Almost surely, 2^27750805064 is an apocalyptic number.

It is an amenable number.

27750805064 is a deficient number, since it is larger than the sum of its proper divisors (25551046756).

27750805064 is a wasteful number, since it uses less digits than its factorization.

27750805064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84606160 (or 84606156 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 27750805064 in words is "twenty-seven billion, seven hundred fifty million, eight hundred five thousand, sixty-four".