669606912001 has 4 divisors (see below), whose sum is σ = 669736409904. Its totient is φ = 669477414100.

The previous prime is 669606911999. The next prime is 669606912047. The reversal of 669606912001 is 100219606966.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 669606912001 - 2¹ = 669606911999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669606912071) 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 3 ways as a sum of consecutive naturals, for example, 64741195 + ... + 64751536.

It is an arithmetic number, because the mean of its divisors is an integer number (167434102476).

Almost surely, 2^669606912001 is an apocalyptic number.

It is an amenable number.

669606912001 is a deficient number, since it is larger than the sum of its proper divisors (129497903).

669606912001 is a wasteful number, since it uses less digits than its factorization.

669606912001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129497902.

The product of its (nonzero) digits is 209952, while the sum is 46.

The spelling of 669606912001 in words is "six hundred sixty-nine billion, six hundred six million, nine hundred twelve thousand, one".