9775681081 has 8 divisors (see below), whose sum is σ = 10093478144. Its totient is φ = 9458037360.

The previous prime is 9775681063. The next prime is 9775681133. The reversal of 9775681081 is 1801865779.

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 9775681081 - 2⁹ = 9775680569 is a prime.

It is a super-2 number, since 2×9775681081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9775681001) 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, 99115 + ... + 171391.

It is an arithmetic number, because the mean of its divisors is an integer number (1261684768).

Almost surely, 2^9775681081 is an apocalyptic number.

It is an amenable number.

9775681081 is a deficient number, since it is larger than the sum of its proper divisors (317797063).

9775681081 is a wasteful number, since it uses less digits than its factorization.

9775681081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76671.

The product of its (nonzero) digits is 846720, while the sum is 52.

The square root of 9775681081 is about 98872.0439810971. The cubic root of 9775681081 is about 2138.2033630050.

The spelling of 9775681081 in words is "nine billion, seven hundred seventy-five million, six hundred eighty-one thousand, eighty-one".