75654507809 has 4 divisors (see below), whose sum is σ = 75661070100. Its totient is φ = 75647945520.

The previous prime is 75654507769. The next prime is 75654507953. The reversal of 75654507809 is 90870545657.

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 59821822225 + 15832685584 = 244585^2 + 125828^2 .

It is a cyclic number.

It is not a de Polignac number, because 75654507809 - 2¹² = 75654503713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75684507809) 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 3 ways as a sum of consecutive naturals, for example, 3263822 + ... + 3286919.

It is an arithmetic number, because the mean of its divisors is an integer number (18915267525).

Almost surely, 2^75654507809 is an apocalyptic number.

It is an amenable number.

75654507809 is a deficient number, since it is larger than the sum of its proper divisors (6562291).

75654507809 is a wasteful number, since it uses less digits than its factorization.

75654507809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6562290.

The product of its (nonzero) digits is 10584000, while the sum is 56.

The spelling of 75654507809 in words is "seventy-five billion, six hundred fifty-four million, five hundred seven thousand, eight hundred nine".