20380799439 has 72 divisors (see below), whose sum is σ = 39826034976. Its totient is φ = 9772963200.

The previous prime is 20380799389. The next prime is 20380799447. The reversal of 20380799439 is 93499708302.

It is not a de Polignac number, because 20380799439 - 2¹³ = 20380791247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20380799489) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3732 + ... + 201929.

Almost surely, 2^20380799439 is an apocalyptic number.

20380799439 is a deficient number, since it is larger than the sum of its proper divisors (19445235537).

20380799439 is a wasteful number, since it uses less digits than its factorization.

20380799439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205709 (or 205695 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 20380799439 in words is "twenty billion, three hundred eighty million, seven hundred ninety-nine thousand, four hundred thirty-nine".