20334225664 has 72 divisors (see below), whose sum is σ = 42465326400. Its totient is φ = 9699452928.

The previous prime is 20334225649. The next prime is 20334225671. The reversal of 20334225664 is 46652243302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2333187 + ... + 2341885.

It is an arithmetic number, because the mean of its divisors is an integer number (589796200).

Almost surely, 2^20334225664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20334225664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21232663200).

20334225664 is an abundant number, since it is smaller than the sum of its proper divisors (22131100736).

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

20334225664 is an equidigital number, since it uses as much as digits as its factorization.

20334225664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9135 (or 9121 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 37.

Adding to 20334225664 its reverse (46652243302), we get a palindrome (66986468966).

The spelling of 20334225664 in words is "twenty billion, three hundred thirty-four million, two hundred twenty-five thousand, six hundred sixty-four".