20535323452 has 24 divisors (see below), whose sum is σ = 41076946400. Its totient is φ = 8799503040.

The previous prime is 20535323441. The next prime is 20535323453. The reversal of 20535323452 is 25432353502.

It is a happy number.

It is a super-2 number, since 2×20535323452² (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 (20535323453) 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, 141802 + ... + 247342.

Almost surely, 2^20535323452 is an apocalyptic number.

It is an amenable number.

20535323452 is an abundant number, since it is smaller than the sum of its proper divisors (20541622948).

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

20535323452 is a wasteful number, since it uses less digits than its factorization.

20535323452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112501 (or 112499 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 34.

Adding to 20535323452 its reverse (25432353502), we get a palindrome (45967676954).

The spelling of 20535323452 in words is "twenty billion, five hundred thirty-five million, three hundred twenty-three thousand, four hundred fifty-two".