20003345532 has 72 divisors (see below), whose sum is σ = 51359781200. Its totient is φ = 6563006208.

The previous prime is 20003345519. The next prime is 20003345581. The reversal of 20003345532 is 23554330002.

20003345532 is a `hidden beast` number, since 200 + 0 + 3 + 3 + 455 + 3 + 2 = 666.

It is a super-4 number, since 4×20003345532⁴ (a number of 42 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20003345496 and 20003345505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4023144 + ... + 4028112.

Almost surely, 2^20003345532 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 20003345532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25679890600).

20003345532 is an abundant number, since it is smaller than the sum of its proper divisors (31356435668).

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

20003345532 is a wasteful number, since it uses less digits than its factorization.

20003345532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6715 (or 6710 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 27.

Adding to 20003345532 its reverse (23554330002), we get a palindrome (43557675534).

The spelling of 20003345532 in words is "twenty billion, three million, three hundred forty-five thousand, five hundred thirty-two".