20585618039 has 8 divisors (see below), whose sum is σ = 24764653440. Its totient is φ = 16716140856.

The previous prime is 20585618023. The next prime is 20585618057. The reversal of 20585618039 is 93081658502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20585618039 - 2⁴ = 20585618023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20585617984 and 20585618002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20585618239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77389409 + ... + 77389674.

It is an arithmetic number, because the mean of its divisors is an integer number (3095581680).

Almost surely, 2^20585618039 is an apocalyptic number.

20585618039 is a deficient number, since it is larger than the sum of its proper divisors (4179035401).

20585618039 is a wasteful number, since it uses less digits than its factorization.

20585618039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154779109.

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 20585618039 in words is "twenty billion, five hundred eighty-five million, six hundred eighteen thousand, thirty-nine".