27986043023 has 4 divisors (see below), whose sum is σ = 27994113960. Its totient is φ = 27977972088.

The previous prime is 27986042977. The next prime is 27986043061. The reversal of 27986043023 is 32034068972.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27986043023 - 2³⁴ = 10806173839 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 (27986043823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4030265 + ... + 4037202.

It is an arithmetic number, because the mean of its divisors is an integer number (6998528490).

Almost surely, 2^27986043023 is an apocalyptic number.

27986043023 is a deficient number, since it is larger than the sum of its proper divisors (8070937).

27986043023 is an equidigital number, since it uses as much as digits as its factorization.

27986043023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8070936.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 27986043023 in words is "twenty-seven billion, nine hundred eighty-six million, forty-three thousand, twenty-three".