673128443792 has 80 divisors (see below), whose sum is σ = 1549885741440. Its totient is φ = 277092458496.

The previous prime is 673128443759. The next prime is 673128443831. The reversal of 673128443792 is 297344821376.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89963 + ... + 1163765.

It is an arithmetic number, because the mean of its divisors is an integer number (19373571768).

Almost surely, 2^673128443792 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 673128443792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (774942870720).

673128443792 is an abundant number, since it is smaller than the sum of its proper divisors (876757297648).

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

673128443792 is a wasteful number, since it uses less digits than its factorization.

673128443792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074040 (or 1074034 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 56.

The spelling of 673128443792 in words is "six hundred seventy-three billion, one hundred twenty-eight million, four hundred forty-three thousand, seven hundred ninety-two".