27886334398656 has 28 divisors (see below), whose sum is σ = 73782593096952. Its totient is φ = 9295444799488.

The previous prime is 27886334398621. The next prime is 27886334398661. The reversal of 27886334398656 is 65689343368872.

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 3 ways as a sum of consecutive naturals, for example, 72620662305 + ... + 72620662688.

Almost surely, 2^{27886334398656} is an apocalyptic number.

It is an amenable number.

27886334398656 is an abundant number, since it is smaller than the sum of its proper divisors (45896258698296).

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

27886334398656 is a wasteful number, since it uses less digits than its factorization.

27886334398656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145241325008 (or 145241324998 counting only the distinct ones).

The product of its digits is 7524679680, while the sum is 78.

The spelling of 27886334398656 in words is "twenty-seven trillion, eight hundred eighty-six billion, three hundred thirty-four million, three hundred ninety-eight thousand, six hundred fifty-six".