20207575839 has 12 divisors (see below), whose sum is σ = 29615511128. Its totient is φ = 12247015440.

The previous prime is 20207575771. The next prime is 20207575841. The reversal of 20207575839 is 93857570202.

It is a happy number.

It is not a de Polignac number, because 20207575839 - 2²³ = 20199187231 is a prime.

It is a super-2 number, since 2×20207575839² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20207575859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27833764 + ... + 27834489.

Almost surely, 2^20207575839 is an apocalyptic number.

20207575839 is a deficient number, since it is larger than the sum of its proper divisors (9407935289).

20207575839 is a wasteful number, since it uses less digits than its factorization.

20207575839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55668278 (or 55668267 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 48.

The spelling of 20207575839 in words is "twenty billion, two hundred seven million, five hundred seventy-five thousand, eight hundred thirty-nine".