20264450016 has 96 divisors (see below), whose sum is σ = 54952224768. Its totient is φ = 6531909120.

The previous prime is 20264449913. The next prime is 20264450023. The reversal of 20264450016 is 61005446202.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7608301 + ... + 7610963.

It is an arithmetic number, because the mean of its divisors is an integer number (572419008).

Almost surely, 2^20264450016 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 20264450016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27476112384).

20264450016 is an abundant number, since it is smaller than the sum of its proper divisors (34687774752).

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

20264450016 is a wasteful number, since it uses less digits than its factorization.

20264450016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5264 (or 5256 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 20264450016 its reverse (61005446202), we get a palindrome (81269896218).

The spelling of 20264450016 in words is "twenty billion, two hundred sixty-four million, four hundred fifty thousand, sixteen".