27042987887 has 16 divisors (see below), whose sum is σ = 27911347200. Its totient is φ = 26188224672.

The previous prime is 27042987883. The next prime is 27042987889. The reversal of 27042987887 is 78878924072.

It is a cyclic number.

It is not a de Polignac number, because 27042987887 - 2² = 27042987883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27042987883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1834448 + ... + 1849130.

It is an arithmetic number, because the mean of its divisors is an integer number (1744459200).

Almost surely, 2^27042987887 is an apocalyptic number.

27042987887 is a deficient number, since it is larger than the sum of its proper divisors (868359313).

27042987887 is a wasteful number, since it uses less digits than its factorization.

27042987887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15142.

The product of its (nonzero) digits is 25288704, while the sum is 62.

The spelling of 27042987887 in words is "twenty-seven billion, forty-two million, nine hundred eighty-seven thousand, eight hundred eighty-seven".