75012721300 has 72 divisors (see below), whose sum is σ = 178236404640. Its totient is φ = 27175843200.

The previous prime is 75012721279. The next prime is 75012721319. The reversal of 75012721300 is 312721057.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169147 + ... + 422653.

It is an arithmetic number, because the mean of its divisors is an integer number (2475505620).

Almost surely, 2^75012721300 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 75012721300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89118202320).

75012721300 is an abundant number, since it is smaller than the sum of its proper divisors (103223683340).

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

75012721300 is a wasteful number, since it uses less digits than its factorization.

75012721300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253801 (or 253794 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 28.

The spelling of 75012721300 in words is "seventy-five billion, twelve million, seven hundred twenty-one thousand, three hundred".