673509524280 has 128 divisors (see below), whose sum is σ = 2028003194880. Its totient is φ = 178938705920.

The previous prime is 673509524257. The next prime is 673509524293. The reversal of 673509524280 is 82425905376.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127146592 + ... + 127151888.

It is an arithmetic number, because the mean of its divisors is an integer number (15843774960).

Almost surely, 2^673509524280 is an apocalyptic number.

673509524280 is a gapful number since it is divisible by the number (60) 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 673509524280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1014001597440).

673509524280 is an abundant number, since it is smaller than the sum of its proper divisors (1354493670600).

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

673509524280 is a wasteful number, since it uses less digits than its factorization.

673509524280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9029 (or 9025 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 673509524280 in words is "six hundred seventy-three billion, five hundred nine million, five hundred twenty-four thousand, two hundred eighty".