20044416539 has 4 divisors (see below), whose sum is σ = 22907904624. Its totient is φ = 17180928456.

The previous prime is 20044416481. The next prime is 20044416563. The reversal of 20044416539 is 93561444002.

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

It is a cyclic number.

It is not a de Polignac number, because 20044416539 - 2²⁸ = 19775981083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20044416839) 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, 1431744032 + ... + 1431744045.

It is an arithmetic number, because the mean of its divisors is an integer number (5726976156).

Almost surely, 2^20044416539 is an apocalyptic number.

20044416539 is a deficient number, since it is larger than the sum of its proper divisors (2863488085).

20044416539 is an equidigital number, since it uses as much as digits as its factorization.

20044416539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863488084.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 20044416539 in words is "twenty billion, forty-four million, four hundred sixteen thousand, five hundred thirty-nine".