664702125647012 has 12 divisors (see below), whose sum is σ = 1163255602594176. Its totient is φ = 332343382048680.

The previous prime is 664702125646957. The next prime is 664702125647057. The reversal of 664702125647012 is 210746521207466.

It is a super-2 number, since 2×664702125647012² (a number of 30 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

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, 1919998988 + ... + 1920345155.

It is an arithmetic number, because the mean of its divisors is an integer number (96937966882848).

Almost surely, 2^{664702125647012} is an apocalyptic number.

It is an amenable number.

664702125647012 is a deficient number, since it is larger than the sum of its proper divisors (498553476947164).

664702125647012 is a wasteful number, since it uses less digits than its factorization.

664702125647012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3840387418 (or 3840387416 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 53.

The spelling of 664702125647012 in words is "six hundred sixty-four trillion, seven hundred two billion, one hundred twenty-five million, six hundred forty-seven thousand, twelve".