20159850164 has 12 divisors (see below), whose sum is σ = 35281029924. Its totient is φ = 10079555904.

The previous prime is 20159850149. The next prime is 20159850169. The reversal of 20159850164 is 46105895102.

It can be written as a sum of positive squares in 2 ways, for example, as 14470165264 + 5689684900 = 120292^2 + 75430^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20159850169) 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 3 ways as a sum of consecutive naturals, for example, 57632 + ... + 208904.

It is an arithmetic number, because the mean of its divisors is an integer number (2940085827).

Almost surely, 2^20159850164 is an apocalyptic number.

It is an amenable number.

20159850164 is a deficient number, since it is larger than the sum of its proper divisors (15121179760).

20159850164 is a wasteful number, since it uses less digits than its factorization.

20159850164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184594 (or 184592 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 41.

The spelling of 20159850164 in words is "twenty billion, one hundred fifty-nine million, eight hundred fifty thousand, one hundred sixty-four".