75289623065 has 4 divisors (see below), whose sum is σ = 90347547684. Its totient is φ = 60231698448.

The previous prime is 75289623047. The next prime is 75289623077. The reversal of 75289623065 is 56032698257.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42309610249 + 32980012816 = 205693^2 + 181604^2 .

It is a cyclic number.

It is not a de Polignac number, because 75289623065 - 2⁸ = 75289622809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75289622998 and 75289623016.

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, 7528962302 + ... + 7528962311.

It is an arithmetic number, because the mean of its divisors is an integer number (22586886921).

Almost surely, 2^75289623065 is an apocalyptic number.

It is an amenable number.

75289623065 is a deficient number, since it is larger than the sum of its proper divisors (15057924619).

75289623065 is a wasteful number, since it uses less digits than its factorization.

75289623065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15057924618.

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 75289623065 in words is "seventy-five billion, two hundred eighty-nine million, six hundred twenty-three thousand, sixty-five".