75423284689 has 9 divisors (see below), whose sum is σ = 76584490857. Its totient is φ = 74279438244.

The previous prime is 75423284687. The next prime is 75423284723. The reversal of 75423284689 is 98648232457.

It is a happy number.

The square root of 75423284689 is 274633.

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

It is not a de Polignac number, because 75423284689 - 2¹ = 75423284687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75423284687) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18398362 + ... + 18402460.

It is an arithmetic number, because the mean of its divisors is an integer number (8509387873).

Almost surely, 2^75423284689 is an apocalyptic number.

75423284689 is the 274633-rd square number.

75423284689 is the 137317-th centered octagonal number.

It is an amenable number.

75423284689 is a deficient number, since it is larger than the sum of its proper divisors (1161206168).

75423284689 is an frugal number, since it uses more digits than its factorization.

75423284689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8332 (or 4166 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 58.

The spelling of 75423284689 in words is "seventy-five billion, four hundred twenty-three million, two hundred eighty-four thousand, six hundred eighty-nine".