4538909078809 has 4 divisors (see below), whose sum is σ = 5187324661504. Its totient is φ = 3890493496116.

The previous prime is 4538909078801. The next prime is 4538909078831. The reversal of 4538909078809 is 9088709098354.

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.

It is a cyclic number.

It is not a de Polignac number, because 4538909078809 - 2³ = 4538909078801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4538909078801) 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, 324207791337 + ... + 324207791350.

It is an arithmetic number, because the mean of its divisors is an integer number (1296831165376).

Almost surely, 2^{4538909078809} is an apocalyptic number.

It is an amenable number.

4538909078809 is a deficient number, since it is larger than the sum of its proper divisors (648415582695).

4538909078809 is an equidigital number, since it uses as much as digits as its factorization.

4538909078809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648415582694.

The product of its (nonzero) digits is 156764160, while the sum is 70.

The spelling of 4538909078809 in words is "four trillion, five hundred thirty-eight billion, nine hundred nine million, seventy-eight thousand, eight hundred nine".