20003353552 has 320 divisors, whose sum is σ = 54050540544. Its totient is φ = 6942228480.

The previous prime is 20003353543. The next prime is 20003353561. The reversal of 20003353552 is 25535330002.

It is an interprime number because it is at equal distance from previous prime (20003353543) and next prime (20003353561).

It is a super-2 number, since 2×20003353552² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 20003353552.

It is a congruent number.

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, 23340708 + ... + 23341564.

Almost surely, 2^20003353552 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 20003353552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27025270272).

20003353552 is an abundant number, since it is smaller than the sum of its proper divisors (34047186992).

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

20003353552 is a wasteful number, since it uses less digits than its factorization.

20003353552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 28.

Adding to 20003353552 its reverse (25535330002), we get a palindrome (45538683554).

The spelling of 20003353552 in words is "twenty billion, three million, three hundred fifty-three thousand, five hundred fifty-two".