20133455500 has 48 divisors (see below), whose sum is σ = 44307271008. Its totient is φ = 7991880000.

The previous prime is 20133455497. The next prime is 20133455501. The reversal of 20133455500 is 555433102.

It is not an unprimeable number, because it can be changed into a prime (20133455501) 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, 88191 + ... + 219190.

It is an arithmetic number, because the mean of its divisors is an integer number (923068146).

Almost surely, 2^20133455500 is an apocalyptic number.

20133455500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20133455500 is an abundant number, since it is smaller than the sum of its proper divisors (24173815508).

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

20133455500 is a wasteful number, since it uses less digits than its factorization.

20133455500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307531 (or 307519 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

Adding to 20133455500 its reverse (555433102), we get a palindrome (20688888602).

The spelling of 20133455500 in words is "twenty billion, one hundred thirty-three million, four hundred fifty-five thousand, five hundred".