9667947991963 has 2 divisors, whose sum is σ = 9667947991964. Its totient is φ = 9667947991962.

The previous prime is 9667947991921. The next prime is 9667947991979. The reversal of 9667947991963 is 3691997497669.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9667947991963 - 2¹⁷ = 9667947860891 is a prime.

It is not a weakly prime, because it can be changed into another prime (9667947991903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4833973995981 + 4833973995982.

It is an arithmetic number, because the mean of its divisors is an integer number (4833973995982).

Almost surely, 2^{9667947991963} is an apocalyptic number.

9667947991963 is a deficient number, since it is larger than the sum of its proper divisors (1).

9667947991963 is an equidigital number, since it uses as much as digits as its factorization.

9667947991963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7499695392, while the sum is 85.

The spelling of 9667947991963 in words is "nine trillion, six hundred sixty-seven billion, nine hundred forty-seven million, nine hundred ninety-one thousand, nine hundred sixty-three".