20159002305 has 128 divisors (see below), whose sum is σ = 40964797440. Its totient is φ = 9317928960.

The previous prime is 20159002291. The next prime is 20159002313. The reversal of 20159002305 is 50320095102.

It is not a de Polignac number, because 20159002305 - 2¹⁰ = 20159001281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 24494124 + ... + 24494946.

It is an arithmetic number, because the mean of its divisors is an integer number (320037480).

Almost surely, 2^20159002305 is an apocalyptic number.

It is an amenable number.

20159002305 is an abundant number, since it is smaller than the sum of its proper divisors (20805795135).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20159002305 is a wasteful number, since it uses less digits than its factorization.

20159002305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688 (or 1682 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

Adding to 20159002305 its reverse (50320095102), we get a palindrome (70479097407).

The spelling of 20159002305 in words is "twenty billion, one hundred fifty-nine million, two thousand, three hundred five".