27905581716 has 24 divisors (see below), whose sum is σ = 65287600224. Its totient is φ = 9276921120.

The previous prime is 27905581709. The next prime is 27905581741. The reversal of 27905581716 is 61718550972.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3112770 + ... + 3121721.

It is an arithmetic number, because the mean of its divisors is an integer number (2720316676).

Almost surely, 2^27905581716 is an apocalyptic number.

It is an amenable number.

27905581716 is an abundant number, since it is smaller than the sum of its proper divisors (37382018508).

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

27905581716 is a wasteful number, since it uses less digits than its factorization.

27905581716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6234871 (or 6234869 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 51.

The spelling of 27905581716 in words is "twenty-seven billion, nine hundred five million, five hundred eighty-one thousand, seven hundred sixteen".