20590681039 has 4 divisors (see below), whose sum is σ = 20596888240. Its totient is φ = 20584473840.

The previous prime is 20590681031. The next prime is 20590681049. The reversal of 20590681039 is 93018609502.

It is a happy number.

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 20590681039 - 2³ = 20590681031 is a prime.

It is a super-2 number, since 2×20590681039² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20590680986 and 20590681004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20590681031) 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, 3098622 + ... + 3105259.

It is an arithmetic number, because the mean of its divisors is an integer number (5149222060).

Almost surely, 2^20590681039 is an apocalyptic number.

20590681039 is a deficient number, since it is larger than the sum of its proper divisors (6207201).

20590681039 is an equidigital number, since it uses as much as digits as its factorization.

20590681039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6207200.

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 20590681039 in words is "twenty billion, five hundred ninety million, six hundred eighty-one thousand, thirty-nine".