1668953469959 has 8 divisors (see below), whose sum is σ = 1804725655488. Its totient is φ = 1537358890240.

The previous prime is 1668953469923. The next prime is 1668953469983. The reversal of 1668953469959 is 9599643598661.

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 1668953469959 - 2¹⁶ = 1668953404423 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 (1668953469059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1044400622 + ... + 1044402219.

It is an arithmetic number, because the mean of its divisors is an integer number (225590706936).

Almost surely, 2^{1668953469959} is an apocalyptic number.

1668953469959 is a deficient number, since it is larger than the sum of its proper divisors (135772185529).

1668953469959 is a wasteful number, since it uses less digits than its factorization.

1668953469959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088802905.

The product of its digits is 3401222400, while the sum is 80.

The spelling of 1668953469959 in words is "one trillion, six hundred sixty-eight billion, nine hundred fifty-three million, four hundred sixty-nine thousand, nine hundred fifty-nine".