27675712878021 has 48 divisors (see below), whose sum is σ = 43833263038656. Its totient is φ = 16723408635648.

The previous prime is 27675712878017. The next prime is 27675712878083. The reversal of 27675712878021 is 12087821757672.

27675712878021 is a `hidden beast` number, since 276 + 7 + 5 + 7 + 1 + 287 + 80 + 2 + 1 = 666.

It is not a de Polignac number, because 27675712878021 - 2² = 27675712878017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27675712878021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27675719878021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3186195 + ... + 8093408.

It is an arithmetic number, because the mean of its divisors is an integer number (913192979972).

Almost surely, 2^{27675712878021} is an apocalyptic number.

It is an amenable number.

27675712878021 is a deficient number, since it is larger than the sum of its proper divisors (16157550160635).

27675712878021 is a wasteful number, since it uses less digits than its factorization.

27675712878021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11280002 (or 11279999 counting only the distinct ones).

The product of its (nonzero) digits is 36879360, while the sum is 63.

The spelling of 27675712878021 in words is "twenty-seven trillion, six hundred seventy-five billion, seven hundred twelve million, eight hundred seventy-eight thousand, twenty-one".