20535960536 has 64 divisors (see below), whose sum is σ = 47436103680. Its totient is φ = 8116329600.

The previous prime is 20535960517. The next prime is 20535960539. The reversal of 20535960536 is 63506953502.

It is a super-2 number, since 2×20535960536² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20535960539) 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, 778361 + ... + 804311.

It is an arithmetic number, because the mean of its divisors is an integer number (741189120).

Almost surely, 2^20535960536 is an apocalyptic number.

20535960536 is a gapful number since it is divisible by the number (26) 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 20535960536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23718051840).

20535960536 is an abundant number, since it is smaller than the sum of its proper divisors (26900143144).

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

20535960536 is a wasteful number, since it uses less digits than its factorization.

20535960536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27064 (or 27060 counting only the distinct ones).

The product of its (nonzero) digits is 729000, while the sum is 44.

The spelling of 20535960536 in words is "twenty billion, five hundred thirty-five million, nine hundred sixty thousand, five hundred thirty-six".