666600789046 has 16 divisors (see below), whose sum is σ = 1043763646464. Its totient is φ = 318690365224.

The previous prime is 666600789011. The next prime is 666600789073. The reversal of 666600789046 is 640987006666.

It is a super-2 number, since 2×666600789046² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 2572960 + ... + 2820163.

It is an arithmetic number, because the mean of its divisors is an integer number (65235227904).

Almost surely, 2^666600789046 is an apocalyptic number.

666600789046 is a deficient number, since it is larger than the sum of its proper divisors (377162857418).

666600789046 is a wasteful number, since it uses less digits than its factorization.

666600789046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5395835.

The product of its (nonzero) digits is 15676416, while the sum is 58.

The spelling of 666600789046 in words is "six hundred sixty-six billion, six hundred million, seven hundred eighty-nine thousand, forty-six".