20442536334 has 96 divisors (see below), whose sum is σ = 51336361440. Its totient is φ = 5819385600.

The previous prime is 20442536333. The next prime is 20442536341. The reversal of 20442536334 is 43363524402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442536333) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 164344 + ... + 260564.

It is an arithmetic number, because the mean of its divisors is an integer number (534753765).

Almost surely, 2^20442536334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20442536334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25668180720).

20442536334 is an abundant number, since it is smaller than the sum of its proper divisors (30893825106).

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

20442536334 is a wasteful number, since it uses less digits than its factorization.

20442536334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96306 (or 96303 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 36.

The spelling of 20442536334 in words is "twenty billion, four hundred forty-two million, five hundred thirty-six thousand, three hundred thirty-four".