6630718558464 has 1296 divisors, whose sum is σ = 26769148084224. Its totient is φ = 1589588582400.

The previous prime is 6630718558417. The next prime is 6630718558489. The reversal of 6630718558464 is 4648558170366.

6630718558464 is a `hidden beast` number, since 6 + 6 + 3 + 0 + 7 + 18 + 558 + 4 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (1296).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 809508609 + ... + 809516799.

Almost surely, 2^{6630718558464} is an apocalyptic number.

6630718558464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6630718558464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13384574042112).

6630718558464 is an abundant number, since it is smaller than the sum of its proper divisors (20138429525760).

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

6630718558464 is a wasteful number, since it uses less digits than its factorization.

6630718558464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8266 (or 8227 counting only the distinct ones).

The product of its (nonzero) digits is 116121600, while the sum is 63.

The spelling of 6630718558464 in words is "six trillion, six hundred thirty billion, seven hundred eighteen million, five hundred fifty-eight thousand, four hundred sixty-four".