27773312812 has 24 divisors (see below), whose sum is σ = 57047887904. Its totient is φ = 11581149312.

The previous prime is 27773312783. The next prime is 27773312813. The reversal of 27773312812 is 21821337772.

It is not an unprimeable number, because it can be changed into a prime (27773312813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13403073 + ... + 13405144.

Almost surely, 2^27773312812 is an apocalyptic number.

It is an amenable number.

27773312812 is an abundant number, since it is smaller than the sum of its proper divisors (29274575092).

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

27773312812 is a wasteful number, since it uses less digits than its factorization.

27773312812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26808265 (or 26808263 counting only the distinct ones).

The product of its digits is 197568, while the sum is 43.

The spelling of 27773312812 in words is "twenty-seven billion, seven hundred seventy-three million, three hundred twelve thousand, eight hundred twelve".