27697691792 has 10 divisors (see below), whose sum is σ = 53664277878. Its totient is φ = 13848845888.

The previous prime is 27697691771. The next prime is 27697691797. The reversal of 27697691792 is 29719679672.

It can be written as a sum of positive squares in only one way, i.e., 26090002576 + 1607689216 = 161524^2 + 40096^2 .

It is not an unprimeable number, because it can be changed into a prime (27697691797) by changing a digit.

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 as a sum of consecutive naturals, namely, 865552853 + ... + 865552884.

Almost surely, 2^27697691792 is an apocalyptic number.

It is an amenable number.

27697691792 is a deficient number, since it is larger than the sum of its proper divisors (25966586086).

27697691792 is a wasteful number, since it uses less digits than its factorization.

27697691792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731105745 (or 1731105739 counting only the distinct ones).

The product of its digits is 36006768, while the sum is 65.

The spelling of 27697691792 in words is "twenty-seven billion, six hundred ninety-seven million, six hundred ninety-one thousand, seven hundred ninety-two".