66313757804 has 36 divisors (see below), whose sum is σ = 135254191464. Its totient is φ = 28365797376.

The previous prime is 66313757737. The next prime is 66313757821. The reversal of 66313757804 is 40875731366.

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 11 ways as a sum of consecutive naturals, for example, 220949 + ... + 425964.

It is an arithmetic number, because the mean of its divisors is an integer number (3757060874).

Almost surely, 2^66313757804 is an apocalyptic number.

It is an amenable number.

66313757804 is an abundant number, since it is smaller than the sum of its proper divisors (68940433660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66313757804 is a wasteful number, since it uses less digits than its factorization.

66313757804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647454 (or 647445 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 66313757804 in words is "sixty-six billion, three hundred thirteen million, seven hundred fifty-seven thousand, eight hundred four".