27686467140 has 24 divisors (see below), whose sum is σ = 77522108160. Its totient is φ = 7383057888.

The previous prime is 27686467091. The next prime is 27686467219. The reversal of 27686467140 is 4176468672.

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 7 ways as a sum of consecutive naturals, for example, 230720500 + ... + 230720619.

It is an arithmetic number, because the mean of its divisors is an integer number (3230087840).

Almost surely, 2^27686467140 is an apocalyptic number.

27686467140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27686467140 is an abundant number, since it is smaller than the sum of its proper divisors (49835641020).

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

27686467140 is a wasteful number, since it uses less digits than its factorization.

27686467140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461441131 (or 461441129 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 51.

The spelling of 27686467140 in words is "twenty-seven billion, six hundred eighty-six million, four hundred sixty-seven thousand, one hundred forty".