20164122330 has 64 divisors (see below), whose sum is σ = 52895120256. Its totient is φ = 4878848000.

The previous prime is 20164122281. The next prime is 20164122403. The reversal of 20164122330 is 3322146102.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20164122330.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113290 + ... + 230570.

It is an arithmetic number, because the mean of its divisors is an integer number (826486254).

Almost surely, 2^20164122330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20164122330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26447560128).

20164122330 is an abundant number, since it is smaller than the sum of its proper divisors (32730997926).

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

20164122330 is a wasteful number, since it uses less digits than its factorization.

20164122330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117823.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20164122330 its reverse (3322146102), we get a palindrome (23486268432).

The spelling of 20164122330 in words is "twenty billion, one hundred sixty-four million, one hundred twenty-two thousand, three hundred thirty".