27880665630 has 16 divisors (see below), whose sum is σ = 66913597584. Its totient is φ = 7434844160.

The previous prime is 27880665623. The next prime is 27880665649. The reversal of 27880665630 is 3656608872.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 464677731 + ... + 464677790.

It is an arithmetic number, because the mean of its divisors is an integer number (4182099849).

Almost surely, 2^27880665630 is an apocalyptic number.

27880665630 is an abundant number, since it is smaller than the sum of its proper divisors (39032931954).

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

27880665630 is a wasteful number, since it uses less digits than its factorization.

27880665630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929355531.

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 27880665630 in words is "twenty-seven billion, eight hundred eighty million, six hundred sixty-five thousand, six hundred thirty".