27677756928 has 160 divisors (see below), whose sum is σ = 77116064256. Its totient is φ = 8804753408.

The previous prime is 27677756921. The next prime is 27677756957. The reversal of 27677756928 is 82965777672.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27677756921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28155925 + ... + 28156907.

Almost surely, 2^27677756928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27677756928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38558032128).

27677756928 is an abundant number, since it is smaller than the sum of its proper divisors (49438307328).

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

27677756928 is an equidigital number, since it uses as much as digits as its factorization.

27677756928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824 (or 1808 counting only the distinct ones).

The product of its digits is 124467840, while the sum is 66.

The spelling of 27677756928 in words is "twenty-seven billion, six hundred seventy-seven million, seven hundred fifty-six thousand, nine hundred twenty-eight".