27804012667 has 8 divisors (see below), whose sum is σ = 27884434032. Its totient is φ = 27723696000.

The previous prime is 27804012661. The next prime is 27804012683. The reversal of 27804012667 is 76621040872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27804012667 - 2¹⁵ = 27803979899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27804012661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522183 + ... + 572959.

It is an arithmetic number, because the mean of its divisors is an integer number (3485554254).

Almost surely, 2^27804012667 is an apocalyptic number.

27804012667 is a deficient number, since it is larger than the sum of its proper divisors (80421365).

27804012667 is a wasteful number, since it uses less digits than its factorization.

27804012667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52349.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 27804012667 in words is "twenty-seven billion, eight hundred four million, twelve thousand, six hundred sixty-seven".