75321212432 has 20 divisors (see below), whose sum is σ = 146081253996. Its totient is φ = 37622824320.

The previous prime is 75321212419. The next prime is 75321212459. The reversal of 75321212432 is 23421212357.

It can be written as a sum of positive squares in 2 ways, for example, as 63808780816 + 11512431616 = 252604^2 + 107296^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2344919 + ... + 2376822.

Almost surely, 2^75321212432 is an apocalyptic number.

It is an amenable number.

75321212432 is a deficient number, since it is larger than the sum of its proper divisors (70760041564).

75321212432 is a wasteful number, since it uses less digits than its factorization.

75321212432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4722746 (or 4722740 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

Adding to 75321212432 its reverse (23421212357), we get a palindrome (98742424789).

The spelling of 75321212432 in words is "seventy-five billion, three hundred twenty-one million, two hundred twelve thousand, four hundred thirty-two".