20535136160 has 384 divisors, whose sum is σ = 65417103360. Its totient is φ = 5897318400.

The previous prime is 20535136159. The next prime is 20535136183. The reversal of 20535136160 is 6163153502.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8659775 + ... + 8662145.

It is an arithmetic number, because the mean of its divisors is an integer number (170357040).

Almost surely, 2^20535136160 is an apocalyptic number.

20535136160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20535136160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32708551680).

20535136160 is an abundant number, since it is smaller than the sum of its proper divisors (44881967200).

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

20535136160 is a wasteful number, since it uses less digits than its factorization.

20535136160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460 (or 2452 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

Adding to 20535136160 its reverse (6163153502), we get a palindrome (26698289662).

The spelling of 20535136160 in words is "twenty billion, five hundred thirty-five million, one hundred thirty-six thousand, one hundred sixty".