27676766556 has 120 divisors (see below), whose sum is σ = 77298439680. Its totient is φ = 8609455008.

The previous prime is 27676766527. The next prime is 27676766563. The reversal of 27676766556 is 65566767672.

27676766556 is a `hidden beast` number, since 2 + 7 + 6 + 7 + 6 + 76 + 6 + 556 = 666.

It is a super-2 number, since 2×27676766556² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27676766493 and 27676766502.

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 39 ways as a sum of consecutive naturals, for example, 378901 + ... + 446003.

It is an arithmetic number, because the mean of its divisors is an integer number (644153664).

Almost surely, 2^27676766556 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 27676766556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38649219840).

27676766556 is an abundant number, since it is smaller than the sum of its proper divisors (49621673124).

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

27676766556 is a wasteful number, since it uses less digits than its factorization.

27676766556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67205 (or 67194 counting only the distinct ones).

The product of its digits is 133358400, while the sum is 63.

The spelling of 27676766556 in words is "twenty-seven billion, six hundred seventy-six million, seven hundred sixty-six thousand, five hundred fifty-six".