664456633263700 has 36 divisors (see below), whose sum is σ = 1444278024352800. Its totient is φ = 265338942675040.

The previous prime is 664456633263679. The next prime is 664456633263707. The reversal of 664456633263700 is 7362336654466.

It is a super-2 number, since 2×664456633263700² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664456633263707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5546322682 + ... + 5546442481.

It is an arithmetic number, because the mean of its divisors is an integer number (40118834009800).

Almost surely, 2^{664456633263700} is an apocalyptic number.

It is an amenable number.

664456633263700 is an abundant number, since it is smaller than the sum of its proper divisors (779821391089100).

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

664456633263700 is a wasteful number, since it uses less digits than its factorization.

664456633263700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11092765776 (or 11092765769 counting only the distinct ones).

The product of its (nonzero) digits is 235146240, while the sum is 61.

The spelling of 664456633263700 in words is "six hundred sixty-four trillion, four hundred fifty-six billion, six hundred thirty-three million, two hundred sixty-three thousand, seven hundred".