21350052044005 has 8 divisors (see below), whose sum is σ = 25622779089024. Its totient is φ = 17078230544400.

The previous prime is 21350052043963. The next prime is 21350052044033. The reversal of 21350052044005 is 50044025005312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21350052044005 - 2⁹ = 21350052043493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226334481 + ... + 226428790.

It is an arithmetic number, because the mean of its divisors is an integer number (3202847386128).

Almost surely, 2^{21350052044005} is an apocalyptic number.

It is an amenable number.

21350052044005 is a deficient number, since it is larger than the sum of its proper divisors (4272727045019).

21350052044005 is an equidigital number, since it uses as much as digits as its factorization.

21350052044005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452772707.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 21350052044005 its reverse (50044025005312), we get a palindrome (71394077049317).

The spelling of 21350052044005 in words is "twenty-one trillion, three hundred fifty billion, fifty-two million, forty-four thousand, five".