27931927868684 has 24 divisors (see below), whose sum is σ = 55863981294240. Its totient is φ = 11970799324416.

The previous prime is 27931927868681. The next prime is 27931927868699. The reversal of 27931927868684 is 48686872913972.

It is a super-2 number, since 2×27931927868684² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27931927868599 and 27931927868608.

It is not an unprimeable number, because it can be changed into a prime (27931927868681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16319732 + ... + 17949860.

It is an arithmetic number, because the mean of its divisors is an integer number (2327665887260).

Almost surely, 2^{27931927868684} is an apocalyptic number.

It is an amenable number.

27931927868684 is an abundant number, since it is smaller than the sum of its proper divisors (27932053425556).

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

27931927868684 is a wasteful number, since it uses less digits than its factorization.

27931927868684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242097 (or 2242095 counting only the distinct ones).

The product of its digits is 3511517184, while the sum is 80.

The spelling of 27931927868684 in words is "twenty-seven trillion, nine hundred thirty-one billion, nine hundred twenty-seven million, eight hundred sixty-eight thousand, six hundred eighty-four".