27783807968 has 48 divisors (see below), whose sum is σ = 62530392960. Its totient is φ = 11904141696.

The previous prime is 27783807959. The next prime is 27783807979. The reversal of 27783807968 is 86970838772.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939455 + ... + 968577.

It is an arithmetic number, because the mean of its divisors is an integer number (1302716520).

Almost surely, 2^27783807968 is an apocalyptic number.

27783807968 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27783807968 is an abundant number, since it is smaller than the sum of its proper divisors (34746584992).

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

27783807968 is a wasteful number, since it uses less digits than its factorization.

27783807968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33399 (or 33391 counting only the distinct ones).

The product of its (nonzero) digits is 56899584, while the sum is 65.

The spelling of 27783807968 in words is "twenty-seven billion, seven hundred eighty-three million, eight hundred seven thousand, nine hundred sixty-eight".