9906424667999 has 8 divisors (see below), whose sum is σ = 10054577102640. Its totient is φ = 9758280920256.

The previous prime is 9906424667963. The next prime is 9906424668029. The reversal of 9906424667999 is 9997664246099.

9906424667999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 9906424667999 - 2¹⁶ = 9906424602463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9906424667599) 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, 144437 + ... + 4453505.

It is an arithmetic number, because the mean of its divisors is an integer number (1256822137830).

Almost surely, 2^{9906424667999} is an apocalyptic number.

9906424667999 is a deficient number, since it is larger than the sum of its proper divisors (148152434641).

9906424667999 is a wasteful number, since it uses less digits than its factorization.

9906424667999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4343449.

The product of its (nonzero) digits is 2857026816, while the sum is 80.

The spelling of 9906424667999 in words is "nine trillion, nine hundred six billion, four hundred twenty-four million, six hundred sixty-seven thousand, nine hundred ninety-nine".