27913665782 has 4 divisors (see below), whose sum is σ = 41870498676. Its totient is φ = 13956832890.

The previous prime is 27913665781. The next prime is 27913665839. The reversal of 27913665782 is 28756631972.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27913665781) 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 as a sum of consecutive naturals, namely, 6978416444 + ... + 6978416447.

It is an arithmetic number, because the mean of its divisors is an integer number (10467624669).

Almost surely, 2^27913665782 is an apocalyptic number.

27913665782 is a deficient number, since it is larger than the sum of its proper divisors (13956832894).

27913665782 is a wasteful number, since it uses less digits than its factorization.

27913665782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13956832893.

The product of its digits is 7620480, while the sum is 56.

The spelling of 27913665782 in words is "twenty-seven billion, nine hundred thirteen million, six hundred sixty-five thousand, seven hundred eighty-two".