27581056142 has 8 divisors (see below), whose sum is σ = 43170348816. Its totient is φ = 13190939872.

The previous prime is 27581056141. The next prime is 27581056163. The reversal of 27581056142 is 24165018572.

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

It is a self number, because there is not a number n which added to its sum of digits gives 27581056142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27581056141) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 299794043 + ... + 299794134.

It is an arithmetic number, because the mean of its divisors is an integer number (5396293602).

Almost surely, 2^27581056142 is an apocalyptic number.

27581056142 is a deficient number, since it is larger than the sum of its proper divisors (15589292674).

27581056142 is a wasteful number, since it uses less digits than its factorization.

27581056142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599588202.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 27581056142 in words is "twenty-seven billion, five hundred eighty-one million, fifty-six thousand, one hundred forty-two".