20434034166 has 32 divisors (see below), whose sum is σ = 50299162368. Its totient is φ = 5389195680.

The previous prime is 20434034161. The next prime is 20434034191. The reversal of 20434034166 is 66143043402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434034161) 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, 18711940 + ... + 18713031.

It is an arithmetic number, because the mean of its divisors is an integer number (1571848824).

Almost surely, 2^20434034166 is an apocalyptic number.

20434034166 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20434034166 is an abundant number, since it is smaller than the sum of its proper divisors (29865128202).

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

20434034166 is a wasteful number, since it uses less digits than its factorization.

20434034166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37424996.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 20434034166 its reverse (66143043402), we get a palindrome (86577077568).

The spelling of 20434034166 in words is "twenty billion, four hundred thirty-four million, thirty-four thousand, one hundred sixty-six".