21143034304000 has 480 divisors, whose sum is σ = 61384381549920. Its totient is φ = 7242504192000.

The previous prime is 21143034303959. The next prime is 21143034304013. The reversal of 21143034304000 is 40343034112.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4575421690 + ... + 4575426310.

It is an arithmetic number, because the mean of its divisors is an integer number (127884128229).

Almost surely, 2^{21143034304000} is an apocalyptic number.

21143034304000 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 21143034304000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30692190774960).

21143034304000 is an abundant number, since it is smaller than the sum of its proper divisors (40241347245920).

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

21143034304000 is an equidigital number, since it uses as much as digits as its factorization.

21143034304000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6127 (or 6094 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21143034304000 its reverse (40343034112), we get a palindrome (21183377338112).

The spelling of 21143034304000 in words is "twenty-one trillion, one hundred forty-three billion, thirty-four million, three hundred four thousand".