73503323046320 has 80 divisors (see below), whose sum is σ = 172184287500288. Its totient is φ = 29180099485440.

The previous prime is 73503323046269. The next prime is 73503323046337. The reversal of 73503323046320 is 2364032330537.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4392185 + ... + 12895655.

Almost surely, 2^{73503323046320} 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 73503323046320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86092143750144).

73503323046320 is an abundant number, since it is smaller than the sum of its proper divisors (98680964453968).

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

73503323046320 is a wasteful number, since it uses less digits than its factorization.

73503323046320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8504298 (or 8504292 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 41.

Adding to 73503323046320 its reverse (2364032330537), we get a palindrome (75867355376857).

The spelling of 73503323046320 in words is "seventy-three trillion, five hundred three billion, three hundred twenty-three million, forty-six thousand, three hundred twenty".