27986043025 has 24 divisors (see below), whose sum is σ = 36918288864. Its totient is φ = 20971910400.

The previous prime is 27986042977. The next prime is 27986043061. The reversal of 27986043025 is 52034068972.

It is not a de Polignac number, because 27986043025 - 2¹⁵ = 27986010257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66367 + ... + 245716.

It is an arithmetic number, because the mean of its divisors is an integer number (1538262036).

Almost surely, 2^27986043025 is an apocalyptic number.

27986043025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

27986043025 is a deficient number, since it is larger than the sum of its proper divisors (8932245839).

27986043025 is a wasteful number, since it uses less digits than its factorization.

27986043025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312321 (or 312316 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 27986043025 in words is "twenty-seven billion, nine hundred eighty-six million, forty-three thousand, twenty-five".