75839101321 has 3 divisors (see below), whose sum is σ = 75839376711. Its totient is φ = 75838825932.

The previous prime is 75839101309. The next prime is 75839101367. The reversal of 75839101321 is 12310193857.

The square root of 75839101321 is 275389.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 67178937721 + 8660163600 = 259189^2 + 93060^2 .

It is not a de Polignac number, because 75839101321 - 2¹⁹ = 75838577033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75839101301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 137695 + ... + 413083.

It is an arithmetic number, because the mean of its divisors is an integer number (25279792237).

Almost surely, 2^75839101321 is an apocalyptic number.

75839101321 is the 275389-th square number.

75839101321 is the 137695-th centered octagonal number.

It is an amenable number.

75839101321 is a deficient number, since it is larger than the sum of its proper divisors (275390).

75839101321 is an frugal number, since it uses more digits than its factorization.

75839101321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550778 (or 275389 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 75839101321 in words is "seventy-five billion, eight hundred thirty-nine million, one hundred one thousand, three hundred twenty-one".