27631711985 has 16 divisors (see below), whose sum is σ = 33722097600. Its totient is φ = 21729781440.

The previous prime is 27631711883. The next prime is 27631712023. The reversal of 27631711985 is 58911713672.

It is a happy number.

It is not a de Polignac number, because 27631711985 - 2⁸ = 27631711729 is a prime.

It is an unprimeable number.

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, 491534 + ... + 544856.

It is an arithmetic number, because the mean of its divisors is an integer number (2107631100).

Almost surely, 2^27631711985 is an apocalyptic number.

It is an amenable number.

27631711985 is a deficient number, since it is larger than the sum of its proper divisors (6090385615).

27631711985 is a wasteful number, since it uses less digits than its factorization.

27631711985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55088.

The product of its digits is 635040, while the sum is 50.

The spelling of 27631711985 in words is "twenty-seven billion, six hundred thirty-one million, seven hundred eleven thousand, nine hundred eighty-five".