73309636320 has 192 divisors, whose sum is σ = 234855936000. Its totient is φ = 19218640896.

The previous prime is 73309636313. The next prime is 73309636321. The reversal of 73309636320 is 2363690337.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73309636321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9058836 + ... + 9066924.

It is an arithmetic number, because the mean of its divisors is an integer number (1223208000).

Almost surely, 2^73309636320 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 73309636320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117427968000).

73309636320 is an abundant number, since it is smaller than the sum of its proper divisors (161546299680).

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

73309636320 is a wasteful number, since it uses less digits than its factorization.

73309636320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8425 (or 8417 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 42.

The spelling of 73309636320 in words is "seventy-three billion, three hundred nine million, six hundred thirty-six thousand, three hundred twenty".