21433414020 has 192 divisors, whose sum is σ = 65919038976. Its totient is φ = 5181235200.

The previous prime is 21433414019. The next prime is 21433414021. The reversal of 21433414020 is 2041433412.

It is an interprime number because it is at equal distance from previous prime (21433414019) and next prime (21433414021).

It is not an unprimeable number, because it can be changed into a prime (21433414021) 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 63 ways as a sum of consecutive naturals, for example, 3808929 + ... + 3814551.

It is an arithmetic number, because the mean of its divisors is an integer number (343328328).

Almost surely, 2^21433414020 is an apocalyptic number.

21433414020 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 21433414020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32959519488).

21433414020 is an abundant number, since it is smaller than the sum of its proper divisors (44485624956).

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

21433414020 is a wasteful number, since it uses less digits than its factorization.

21433414020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5790 (or 5788 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21433414020 its reverse (2041433412), we get a palindrome (23474847432).

The spelling of 21433414020 in words is "twenty-one billion, four hundred thirty-three million, four hundred fourteen thousand, twenty".