9966706432263 has 60 divisors (see below), whose sum is σ = 17916536361240. Its totient is φ = 5498872450848.

The previous prime is 9966706432139. The next prime is 9966706432283. The reversal of 9966706432263 is 3622346076699.

It is a happy number.

It is not a de Polignac number, because 9966706432263 - 2¹⁴ = 9966706415879 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 9966706432263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9966706432283) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 43180381 + ... + 43410582.

It is an arithmetic number, because the mean of its divisors is an integer number (298608939354).

Almost surely, 2^{9966706432263} is an apocalyptic number.

9966706432263 is a deficient number, since it is larger than the sum of its proper divisors (7949829928977).

9966706432263 is a wasteful number, since it uses less digits than its factorization.

9966706432263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86591018 (or 86591002 counting only the distinct ones).

The product of its (nonzero) digits is 105815808, while the sum is 63.

The spelling of 9966706432263 in words is "nine trillion, nine hundred sixty-six billion, seven hundred six million, four hundred thirty-two thousand, two hundred sixty-three".