27773321672 has 16 divisors (see below), whose sum is σ = 52124075100. Its totient is φ = 13873568320.

The previous prime is 27773321671. The next prime is 27773321699. The reversal of 27773321672 is 27612337772.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27289057636 + 484264036 = 165194^2 + 22006^2 .

It is not an unprimeable number, because it can be changed into a prime (27773321671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1627547 + ... + 1644522.

Almost surely, 2^27773321672 is an apocalyptic number.

It is an amenable number.

27773321672 is a deficient number, since it is larger than the sum of its proper divisors (24350753428).

27773321672 is a wasteful number, since it uses less digits than its factorization.

27773321672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273136 (or 3273132 counting only the distinct ones).

The product of its digits is 1037232, while the sum is 47.

The spelling of 27773321672 in words is "twenty-seven billion, seven hundred seventy-three million, three hundred twenty-one thousand, six hundred seventy-two".