21050024352 has 96 divisors (see below), whose sum is σ = 63267894144. Its totient is φ = 6003072000.

The previous prime is 21050024339. The next prime is 21050024357. The reversal of 21050024352 is 25342005012.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (21050024357) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 334602 + ... + 392502.

It is an arithmetic number, because the mean of its divisors is an integer number (659040564).

Almost surely, 2^21050024352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21050024352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31633947072).

21050024352 is an abundant number, since it is smaller than the sum of its proper divisors (42217869792).

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

21050024352 is a wasteful number, since it uses less digits than its factorization.

21050024352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58462 (or 58454 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 21050024352 its reverse (25342005012), we get a palindrome (46392029364).

The spelling of 21050024352 in words is "twenty-one billion, fifty million, twenty-four thousand, three hundred fifty-two".