20289463839 has 12 divisors (see below), whose sum is σ = 29309266896. Its totient is φ = 13525264512.

The previous prime is 20289463837. The next prime is 20289463847. The reversal of 20289463839 is 93836498202.

It is a happy number.

20289463839 is a `hidden beast` number, since 20 + 2 + 89 + 463 + 83 + 9 = 666.

It is not a de Polignac number, because 20289463839 - 2¹ = 20289463837 is a prime.

It is a super-5 number, since 5×20289463839⁵ (a number of 53 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20289463837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46767 + ... + 206799.

It is an arithmetic number, because the mean of its divisors is an integer number (2442438908).

Almost surely, 2^20289463839 is an apocalyptic number.

20289463839 is a deficient number, since it is larger than the sum of its proper divisors (9019803057).

20289463839 is a wasteful number, since it uses less digits than its factorization.

20289463839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174126 (or 174123 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 20289463839 in words is "twenty billion, two hundred eighty-nine million, four hundred sixty-three thousand, eight hundred thirty-nine".