9999993999967 has 2 divisors, whose sum is σ = 9999993999968. Its totient is φ = 9999993999966.

The previous prime is 9999993999913. The next prime is 9999993999971. The reversal of 9999993999967 is 7699993999999.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9999993999967 - 2³⁵ = 9965634261599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9999993999967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9999993999167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999996999983 + 4999996999984.

It is an arithmetic number, because the mean of its divisors is an integer number (4999996999984).

Almost surely, 2^{9999993999967} is an apocalyptic number.

9999993999967 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999993999967 is an equidigital number, since it uses as much as digits as its factorization.

9999993999967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 439334834526, while the sum is 106.

The spelling of 9999993999967 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred ninety-three million, nine hundred ninety-nine thousand, nine hundred sixty-seven".