73220346032 has 20 divisors (see below), whose sum is σ = 143119861320. Its totient is φ = 36286188288.

The previous prime is 73220346029. The next prime is 73220346053. The reversal of 73220346032 is 23064302237.

It is a super-2 number, since 2×73220346032² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 73220346032.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20247182 + ... + 20250797.

It is an arithmetic number, because the mean of its divisors is an integer number (7155993066).

Almost surely, 2^73220346032 is an apocalyptic number.

It is an amenable number.

73220346032 is a deficient number, since it is larger than the sum of its proper divisors (69899515288).

73220346032 is a wasteful number, since it uses less digits than its factorization.

73220346032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40498100 (or 40498094 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 32.

Adding to 73220346032 its reverse (23064302237), we get a palindrome (96284648269).

The spelling of 73220346032 in words is "seventy-three billion, two hundred twenty million, three hundred forty-six thousand, thirty-two".