668055354145 has 8 divisors (see below), whose sum is σ = 813631595904. Its totient is φ = 526467502704.

The previous prime is 668055354139. The next prime is 668055354151. The reversal of 668055354145 is 541453550866.

It is an interprime number because it is at equal distance from previous prime (668055354139) and next prime (668055354151).

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 668055354145 - 2⁹ = 668055353633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 668055354092 and 668055354101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 997097209 + ... + 997097878.

It is an arithmetic number, because the mean of its divisors is an integer number (101703949488).

Almost surely, 2^668055354145 is an apocalyptic number.

It is an amenable number.

668055354145 is a deficient number, since it is larger than the sum of its proper divisors (145576241759).

668055354145 is a wasteful number, since it uses less digits than its factorization.

668055354145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994195159.

The product of its (nonzero) digits is 8640000, while the sum is 52.

The spelling of 668055354145 in words is "six hundred sixty-eight billion, fifty-five million, three hundred fifty-four thousand, one hundred forty-five".