9927681775 has 12 divisors (see below), whose sum is σ = 13429446264. Its totient is φ = 7220132000.

The previous prime is 9927681721. The next prime is 9927681781. The reversal of 9927681775 is 5771867299.

It is a de Polignac number, because none of the positive numbers 2^k-9927681775 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18050056 + ... + 18050605.

It is an arithmetic number, because the mean of its divisors is an integer number (1119120522).

Almost surely, 2^9927681775 is an apocalyptic number.

9927681775 is a deficient number, since it is larger than the sum of its proper divisors (3501764489).

9927681775 is a wasteful number, since it uses less digits than its factorization.

9927681775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36100682 (or 36100677 counting only the distinct ones).

The product of its digits is 13335840, while the sum is 61.

The square root of 9927681775 is about 99637.7527596844. The cubic root of 9927681775 is about 2149.2286235853.

The spelling of 9927681775 in words is "nine billion, nine hundred twenty-seven million, six hundred eighty-one thousand, seven hundred seventy-five".