27888913888 has 24 divisors (see below), whose sum is σ = 59897781720. Its totient is φ = 12676778880.

The previous prime is 27888913883. The next prime is 27888913889. The reversal of 27888913888 is 88831988872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27888913883) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 39614583 + ... + 39615286.

It is an arithmetic number, because the mean of its divisors is an integer number (2495740905).

Almost surely, 2^27888913888 is an apocalyptic number.

It is an amenable number.

27888913888 is an abundant number, since it is smaller than the sum of its proper divisors (32008867832).

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

27888913888 is a wasteful number, since it uses less digits than its factorization.

27888913888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79229890 (or 79229882 counting only the distinct ones).

The product of its digits is 99090432, while the sum is 70.

The spelling of 27888913888 in words is "twenty-seven billion, eight hundred eighty-eight million, nine hundred thirteen thousand, eight hundred eighty-eight".