673893434368 has 264 divisors, whose sum is σ = 1755785592000. Its totient is φ = 255452037120.

The previous prime is 673893434359. The next prime is 673893434371. The reversal of 673893434368 is 863434398376.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20405133 + ... + 20438131.

It is an arithmetic number, because the mean of its divisors is an integer number (6650703000).

Almost surely, 2^673893434368 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 673893434368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (877892796000).

673893434368 is an abundant number, since it is smaller than the sum of its proper divisors (1081892157632).

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

673893434368 is a wasteful number, since it uses less digits than its factorization.

673893434368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33081 (or 33056 counting only the distinct ones).

The product of its digits is 188116992, while the sum is 64.

The spelling of 673893434368 in words is "six hundred seventy-three billion, eight hundred ninety-three million, four hundred thirty-four thousand, three hundred sixty-eight".