875044146809 has 4 divisors (see below), whose sum is σ = 1000050453504. Its totient is φ = 750037840116.

The previous prime is 875044146731. The next prime is 875044146811. The reversal of 875044146809 is 908641440578.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 908641440578 = 2 ⋅454320720289.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-875044146809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (875044146829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62503153337 + ... + 62503153350.

It is an arithmetic number, because the mean of its divisors is an integer number (250012613376).

Almost surely, 2^875044146809 is an apocalyptic number.

It is an amenable number.

875044146809 is a deficient number, since it is larger than the sum of its proper divisors (125006306695).

875044146809 is a wasteful number, since it uses less digits than its factorization.

875044146809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125006306694.

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 875044146809 in words is "eight hundred seventy-five billion, forty-four million, one hundred forty-six thousand, eight hundred nine".