27012986646 has 16 divisors (see below), whose sum is σ = 55768747008. Its totient is φ = 8713866600.

The previous prime is 27012986639. The next prime is 27012986657. The reversal of 27012986646 is 64668921072.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72615370 + ... + 72615741.

It is an arithmetic number, because the mean of its divisors is an integer number (3485546688).

Almost surely, 2^27012986646 is an apocalyptic number.

27012986646 is an abundant number, since it is smaller than the sum of its proper divisors (28755760362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27012986646 is a wasteful number, since it uses less digits than its factorization.

27012986646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145231147.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 27012986646 in words is "twenty-seven billion, twelve million, nine hundred eighty-six thousand, six hundred forty-six".