20534110384 has 80 divisors (see below), whose sum is σ = 41956189632. Its totient is φ = 9716788224.

The previous prime is 20534110381. The next prime is 20534110397. The reversal of 20534110384 is 48301143502.

It is not an unprimeable number, because it can be changed into a prime (20534110381) 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, 16927762 + ... + 16928974.

Almost surely, 2^20534110384 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 20534110384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20978094816).

20534110384 is an abundant number, since it is smaller than the sum of its proper divisors (21422079248).

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

20534110384 is a wasteful number, since it uses less digits than its factorization.

20534110384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694 (or 1688 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 20534110384 its reverse (48301143502), we get a palindrome (68835253886).

The spelling of 20534110384 in words is "twenty billion, five hundred thirty-four million, one hundred ten thousand, three hundred eighty-four".