27750806646 has 16 divisors (see below), whose sum is σ = 55503403824. Its totient is φ = 9249970464.

The previous prime is 27750806569. The next prime is 27750806669. The reversal of 27750806646 is 64660805772.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 210960 + ... + 316236.

It is an arithmetic number, because the mean of its divisors is an integer number (3468962739).

Almost surely, 2^27750806646 is an apocalyptic number.

27750806646 is an abundant number, since it is smaller than the sum of its proper divisors (27752597178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27750806646 is a wasteful number, since it uses less digits than its factorization.

27750806646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149215.

The product of its (nonzero) digits is 3386880, while the sum is 51.

The spelling of 27750806646 in words is "twenty-seven billion, seven hundred fifty million, eight hundred six thousand, six hundred forty-six".