20508141171 has 64 divisors (see below), whose sum is σ = 32689750016. Its totient is φ = 11190441600.

The previous prime is 20508141151. The next prime is 20508141209. The reversal of 20508141171 is 17114180502.

It is not a de Polignac number, because 20508141171 - 2¹⁵ = 20508108403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20508141151) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 16659126 + ... + 16660356.

It is an arithmetic number, because the mean of its divisors is an integer number (510777344).

Almost surely, 2^20508141171 is an apocalyptic number.

20508141171 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20508141171 is a deficient number, since it is larger than the sum of its proper divisors (12181608845).

20508141171 is a wasteful number, since it uses less digits than its factorization.

20508141171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592.

The product of its (nonzero) digits is 2240, while the sum is 30.

The spelling of 20508141171 in words is "twenty billion, five hundred eight million, one hundred forty-one thousand, one hundred seventy-one".