27720521708 has 48 divisors (see below), whose sum is σ = 56241174528. Its totient is φ = 11815200000.

The previous prime is 27720521659. The next prime is 27720521729. The reversal of 27720521708 is 80712502772.

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 15 ways as a sum of consecutive naturals, for example, 134333 + ... + 271083.

It is an arithmetic number, because the mean of its divisors is an integer number (1171691136).

Almost surely, 2^27720521708 is an apocalyptic number.

It is an amenable number.

27720521708 is an abundant number, since it is smaller than the sum of its proper divisors (28520652820).

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

27720521708 is a wasteful number, since it uses less digits than its factorization.

27720521708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137054 (or 137052 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 41.

The spelling of 27720521708 in words is "twenty-seven billion, seven hundred twenty million, five hundred twenty-one thousand, seven hundred eight".