20858310159 has 16 divisors (see below), whose sum is σ = 28123869312. Its totient is φ = 13750013088.

The previous prime is 20858310131. The next prime is 20858310169. The reversal of 20858310159 is 95101385802.

It is not a de Polignac number, because 20858310159 - 2²³ = 20849921551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20858310159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20858310119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11929 + ... + 204594.

It is an arithmetic number, because the mean of its divisors is an integer number (1757741832).

Almost surely, 2^20858310159 is an apocalyptic number.

20858310159 is a deficient number, since it is larger than the sum of its proper divisors (7265559153).

20858310159 is a wasteful number, since it uses less digits than its factorization.

20858310159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216886.

The product of its (nonzero) digits is 86400, while the sum is 42.

The spelling of 20858310159 in words is "twenty billion, eight hundred fifty-eight million, three hundred ten thousand, one hundred fifty-nine".