27789385912 has 8 divisors (see below), whose sum is σ = 52105098600. Its totient is φ = 13894692952.

The previous prime is 27789385873. The next prime is 27789385913. The reversal of 27789385912 is 21958398772.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27789385913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1736836612 + ... + 1736836627.

It is an arithmetic number, because the mean of its divisors is an integer number (6513137325).

Almost surely, 2^27789385912 is an apocalyptic number.

It is an amenable number.

27789385912 is a deficient number, since it is larger than the sum of its proper divisors (24315712688).

27789385912 is a wasteful number, since it uses less digits than its factorization.

27789385912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3473673245 (or 3473673241 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 61.

The spelling of 27789385912 in words is "twenty-seven billion, seven hundred eighty-nine million, three hundred eighty-five thousand, nine hundred twelve".