20322041536 has 56 divisors (see below), whose sum is σ = 42920381520. Its totient is φ = 9513664512.

The previous prime is 20322041533. The next prime is 20322041539. The reversal of 20322041536 is 63514022302.

It is an interprime number because it is at equal distance from previous prime (20322041533) and next prime (20322041539).

It is not an unprimeable number, because it can be changed into a prime (20322041533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161595 + ... + 258373.

Almost surely, 2^20322041536 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 20322041536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21460190760).

20322041536 is an abundant number, since it is smaller than the sum of its proper divisors (22598339984).

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

20322041536 is a wasteful number, since it uses less digits than its factorization.

20322041536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97001 (or 96991 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20322041536 its reverse (63514022302), we get a palindrome (83836063838).

The spelling of 20322041536 in words is "twenty billion, three hundred twenty-two million, forty-one thousand, five hundred thirty-six".