9999642433567 has 8 divisors (see below), whose sum is σ = 10434451212000. Its totient is φ = 9564837131520.

The previous prime is 9999642433493. The next prime is 9999642433579. The reversal of 9999642433567 is 7653342469999.

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 9999642433567 - 2²⁷ = 9999508215839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9999642433493 and 9999642433502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999642437567) 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, 6249559 + ... + 7684807.

It is an arithmetic number, because the mean of its divisors is an integer number (1304306401500).

Almost surely, 2^{9999642433567} is an apocalyptic number.

9999642433567 is a deficient number, since it is larger than the sum of its proper divisors (434808778433).

9999642433567 is a wasteful number, since it uses less digits than its factorization.

9999642433567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738193.

The product of its digits is 2380855680, while the sum is 76.

The spelling of 9999642433567 in words is "nine trillion, nine hundred ninety-nine billion, six hundred forty-two million, four hundred thirty-three thousand, five hundred sixty-seven".