1666959113829 has 8 divisors (see below), whose sum is σ = 2229851932000. Its totient is φ = 1107686185776.

The previous prime is 1666959113821. The next prime is 1666959113843. The reversal of 1666959113829 is 9283119596661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1666959113829 - 2³ = 1666959113821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1666959113829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666959113821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 904971454 + ... + 904973295.

It is an arithmetic number, because the mean of its divisors is an integer number (278731491500).

Almost surely, 2^{1666959113829} is an apocalyptic number.

It is an amenable number.

1666959113829 is a deficient number, since it is larger than the sum of its proper divisors (562892818171).

1666959113829 is a wasteful number, since it uses less digits than its factorization.

1666959113829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809945059.

The product of its digits is 37791360, while the sum is 66.

The spelling of 1666959113829 in words is "one trillion, six hundred sixty-six billion, nine hundred fifty-nine million, one hundred thirteen thousand, eight hundred twenty-nine".