73000044032 has 80 divisors (see below), whose sum is σ = 148317404400. Its totient is φ = 35886563328.

The previous prime is 73000044023. The next prime is 73000044043. The reversal of 73000044032 is 23044000037.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 73000043989 and 73000044007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21163844 + ... + 21167292.

It is an arithmetic number, because the mean of its divisors is an integer number (1853967555).

Almost surely, 2^73000044032 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 73000044032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74158702200).

73000044032 is an abundant number, since it is smaller than the sum of its proper divisors (75317360368).

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

73000044032 is an equidigital number, since it uses as much as digits as its factorization.

73000044032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151 (or 4135 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 23.

Adding to 73000044032 its reverse (23044000037), we get a palindrome (96044044069).

The spelling of 73000044032 in words is "seventy-three billion, forty-four thousand, thirty-two".