27328854615921 has 12 divisors (see below), whose sum is σ = 41552644445520. Its totient is φ = 17260329231000.

The previous prime is 27328854615919. The next prime is 27328854615941. The reversal of 27328854615921 is 12951645882372.

It is a happy number.

27328854615921 is a `hidden beast` number, since 2 + 7 + 3 + 2 + 8 + 8 + 5 + 4 + 615 + 9 + 2 + 1 = 666.

It is not a de Polignac number, because 27328854615921 - 2¹ = 27328854615919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27328854615941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79908931455 + ... + 79908931796.

It is an arithmetic number, because the mean of its divisors is an integer number (3462720370460).

Almost surely, 2^{27328854615921} is an apocalyptic number.

It is an amenable number.

27328854615921 is a deficient number, since it is larger than the sum of its proper divisors (14223789829599).

27328854615921 is a wasteful number, since it uses less digits than its factorization.

27328854615921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159817863276 (or 159817863273 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 63.

The spelling of 27328854615921 in words is "twenty-seven trillion, three hundred twenty-eight billion, eight hundred fifty-four million, six hundred fifteen thousand, nine hundred twenty-one".