668522070742 has 8 divisors (see below), whose sum is σ = 1037361834000. Its totient is φ = 322734792744.

The previous prime is 668522070737. The next prime is 668522070791. The reversal of 668522070742 is 247070225866.

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

It is a congruent number.

It is an unprimeable number.

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, 5763121242 + ... + 5763121357.

It is an arithmetic number, because the mean of its divisors is an integer number (129670229250).

Almost surely, 2^668522070742 is an apocalyptic number.

668522070742 is a deficient number, since it is larger than the sum of its proper divisors (368839763258).

668522070742 is a wasteful number, since it uses less digits than its factorization.

668522070742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11526242630.

The product of its (nonzero) digits is 2257920, while the sum is 49.

The spelling of 668522070742 in words is "six hundred sixty-eight billion, five hundred twenty-two million, seventy thousand, seven hundred forty-two".