27442744667 has 16 divisors (see below), whose sum is σ = 29650222560. Its totient is φ = 25249190400.

The previous prime is 27442744663. The next prime is 27442744687. The reversal of 27442744667 is 76644724472.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 27442744667 - 2² = 27442744663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27442744663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6438317 + ... + 6442577.

It is an arithmetic number, because the mean of its divisors is an integer number (1853138910).

Almost surely, 2^27442744667 is an apocalyptic number.

27442744667 is a deficient number, since it is larger than the sum of its proper divisors (2207477893).

27442744667 is a wasteful number, since it uses less digits than its factorization.

27442744667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5774.

The product of its digits is 12644352, while the sum is 53.

The spelling of 27442744667 in words is "twenty-seven billion, four hundred forty-two million, seven hundred forty-four thousand, six hundred sixty-seven".