75065313457 has 4 divisors (see below), whose sum is σ = 76481640180. Its totient is φ = 73648986736.

The previous prime is 75065313443. The next prime is 75065313469. The reversal of 75065313457 is 75431356057.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75431356057 = 1571 ⋅48014867.

It can be written as a sum of positive squares in 2 ways, for example, as 51336683776 + 23728629681 = 226576^2 + 154041^2 .

It is a cyclic number.

It is not a de Polignac number, because 75065313457 - 2¹⁹ = 75064789169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75065311457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 708163282 + ... + 708163387.

It is an arithmetic number, because the mean of its divisors is an integer number (19120410045).

Almost surely, 2^75065313457 is an apocalyptic number.

It is an amenable number.

75065313457 is a deficient number, since it is larger than the sum of its proper divisors (1416326723).

75065313457 is a wasteful number, since it uses less digits than its factorization.

75065313457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416326722.

The product of its (nonzero) digits is 1323000, while the sum is 46.

The spelling of 75065313457 in words is "seventy-five billion, sixty-five million, three hundred thirteen thousand, four hundred fifty-seven".