27427543129 has 8 divisors (see below), whose sum is σ = 31346901440. Its totient is φ = 23508469296.

The previous prime is 27427543123. The next prime is 27427543151. The reversal of 27427543129 is 92134572472.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27427543129 - 2⁵ = 27427543097 is a prime.

It is a super-2 number, since 2×27427543129² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27427543123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209107 + ... + 313975.

It is an arithmetic number, because the mean of its divisors is an integer number (3918362680).

Almost surely, 2^27427543129 is an apocalyptic number.

It is an amenable number.

27427543129 is a deficient number, since it is larger than the sum of its proper divisors (3919358311).

27427543129 is a wasteful number, since it uses less digits than its factorization.

27427543129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142239.

The product of its digits is 846720, while the sum is 46.

The spelling of 27427543129 in words is "twenty-seven billion, four hundred twenty-seven million, five hundred forty-three thousand, one hundred twenty-nine".