20338388539 has 16 divisors (see below), whose sum is σ = 23304960000. Its totient is φ = 17387149824.

The previous prime is 20338388533. The next prime is 20338388563. The reversal of 20338388539 is 93588383302.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20338388539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20338388533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8476662 + ... + 8479060.

It is an arithmetic number, because the mean of its divisors is an integer number (1456560000).

Almost surely, 2^20338388539 is an apocalyptic number.

20338388539 is a deficient number, since it is larger than the sum of its proper divisors (2966571461).

20338388539 is a wasteful number, since it uses less digits than its factorization.

20338388539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5082.

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 20338388539 in words is "twenty billion, three hundred thirty-eight million, three hundred eighty-eight thousand, five hundred thirty-nine".