9661118633 has 2 divisors, whose sum is σ = 9661118634. Its totient is φ = 9661118632.

The previous prime is 9661118629. The next prime is 9661118647. The reversal of 9661118633 is 3368111669.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8685680809 + 975437824 = 93197^2 + 31232^2 .

It is a cyclic number.

It is not a de Polignac number, because 9661118633 - 2² = 9661118629 is a prime.

It is not a weakly prime, because it can be changed into another prime (9661118693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4830559316 + 4830559317.

It is an arithmetic number, because the mean of its divisors is an integer number (4830559317).

Almost surely, 2^9661118633 is an apocalyptic number.

It is an amenable number.

9661118633 is a deficient number, since it is larger than the sum of its proper divisors (1).

9661118633 is an equidigital number, since it uses as much as digits as its factorization.

9661118633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 9661118633 is about 98290.9895819551. The cubic root of 9661118633 is about 2129.8178948253.

The spelling of 9661118633 in words is "nine billion, six hundred sixty-one million, one hundred eighteen thousand, six hundred thirty-three".