664455116470000 has 400 divisors, whose sum is σ = 1711772637664320. Its totient is φ = 249219063808000.

The previous prime is 664455116469983. The next prime is 664455116470001. The reversal of 664455116470000 is 74611554466.

664455116470000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (400).

It is a super-2 number, since 2×664455116470000² (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 (664455116470001) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 14835207606 + ... + 14835252394.

Almost surely, 2^{664455116470000} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664455116470000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (855886318832160).

664455116470000 is an abundant number, since it is smaller than the sum of its proper divisors (1047317521194320).

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

664455116470000 is a wasteful number, since it uses less digits than its factorization.

664455116470000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46110 (or 46089 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 49.

The spelling of 664455116470000 in words is "six hundred sixty-four trillion, four hundred fifty-five billion, one hundred sixteen million, four hundred seventy thousand".