20433201100 has 72 divisors (see below), whose sum is σ = 47879973680. Its totient is φ = 7524161280.

The previous prime is 20433201077. The next prime is 20433201109. The reversal of 20433201100 is 110233402.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20433201109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 463831 + ... + 505969.

Almost surely, 2^20433201100 is an apocalyptic number.

20433201100 is a gapful number since it is divisible by the number (20) 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 20433201100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23939986840).

20433201100 is an abundant number, since it is smaller than the sum of its proper divisors (27446772580).

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

20433201100 is a wasteful number, since it uses less digits than its factorization.

20433201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42539 (or 42532 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20433201100 its reverse (110233402), we get a palindrome (20543434502).

The spelling of 20433201100 in words is "twenty billion, four hundred thirty-three million, two hundred one thousand, one hundred".