9665551043 has 2 divisors, whose sum is σ = 9665551044. Its totient is φ = 9665551042.

The previous prime is 9665550953. The next prime is 9665551111. The reversal of 9665551043 is 3401555669.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9665551043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9665550985 and 9665551003.

It is not a weakly prime, because it can be changed into another prime (9665511043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4832775521 + 4832775522.

It is an arithmetic number, because the mean of its divisors is an integer number (4832775522).

Almost surely, 2^9665551043 is an apocalyptic number.

9665551043 is a deficient number, since it is larger than the sum of its proper divisors (1).

9665551043 is an equidigital number, since it uses as much as digits as its factorization.

9665551043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486000, while the sum is 44.

The square root of 9665551043 is about 98313.5343836239. The cubic root of 9665551043 is about 2130.1435570035.

The spelling of 9665551043 in words is "nine billion, six hundred sixty-five million, five hundred fifty-one thousand, forty-three".