27808113788 has 36 divisors (see below), whose sum is σ = 60223499280. Its totient is φ = 11001010176.

The previous prime is 27808113787. The next prime is 27808113811. The reversal of 27808113788 is 88731180872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27808113787) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2933573 + ... + 2943036.

It is an arithmetic number, because the mean of its divisors is an integer number (1672874980).

Almost surely, 2^27808113788 is an apocalyptic number.

27808113788 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27808113788 is an abundant number, since it is smaller than the sum of its proper divisors (32415385492).

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

27808113788 is a wasteful number, since it uses less digits than its factorization.

27808113788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5876646 (or 5876631 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 53.

The spelling of 27808113788 in words is "twenty-seven billion, eight hundred eight million, one hundred thirteen thousand, seven hundred eighty-eight".