21454330000 has 50 divisors (see below), whose sum is σ = 51943102574. Its totient is φ = 8581728000.

The previous prime is 21454329989. The next prime is 21454330031. The reversal of 21454330000 is 3345412.

It can be written as a sum of positive squares in 5 ways, for example, as 8602933504 + 12851396496 = 92752^2 + 113364^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1062717 + ... + 1082716.

Almost surely, 2^21454330000 is an apocalyptic number.

21454330000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21454330000 is an abundant number, since it is smaller than the sum of its proper divisors (30488772574).

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

21454330000 is an equidigital number, since it uses as much as digits as its factorization.

21454330000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145461 (or 2145440 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 21454330000 its reverse (3345412), we get a palindrome (21457675412).

The spelling of 21454330000 in words is "twenty-one billion, four hundred fifty-four million, three hundred thirty thousand".