673444594368 has 2016 divisors, whose sum is σ = 2762854113600. Its totient is φ = 159188779008.

The previous prime is 673444594357. The next prime is 673444594379. The reversal of 673444594368 is 863495444376.

673444594368 is a `hidden beast` number, since 6 + 7 + 3 + 4 + 4 + 4 + 594 + 36 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (673444594357) and next prime (673444594379).

It is a tau number, because it is divible by the number of its divisors (2016).

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

Its product of digits (209018880) is a multiple of the sum of its prime divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 9225268380 + ... + 9225268452.

It is an arithmetic number, because the mean of its divisors is an integer number (1370463350).

Almost surely, 2^673444594368 is an apocalyptic number.

673444594368 is a gapful number since it is divisible by the number (68) 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 673444594368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1381427056800).

673444594368 is an abundant number, since it is smaller than the sum of its proper divisors (2089409519232).

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

673444594368 is a wasteful number, since it uses less digits than its factorization.

673444594368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 144 counting only the distinct ones).

The product of its digits is 209018880, while the sum is 63.

The spelling of 673444594368 in words is "six hundred seventy-three billion, four hundred forty-four million, five hundred ninety-four thousand, three hundred sixty-eight".