21350052044042 has 8 divisors (see below), whose sum is σ = 32047118729796. Its totient is φ = 10667679134112.

The previous prime is 21350052044033. The next prime is 21350052044077. The reversal of 21350052044042 is 24044025005312.

It can be written as a sum of positive squares in 2 ways, for example, as 12577016795281 + 8773035248761 = 3546409^2 + 2961931^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3673440323 + ... + 3673446134.

Almost surely, 2^{21350052044042} is an apocalyptic number.

21350052044042 is a deficient number, since it is larger than the sum of its proper divisors (10697066685754).

21350052044042 is a wasteful number, since it uses less digits than its factorization.

21350052044042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7346887912.

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 21350052044042 its reverse (24044025005312), we get a palindrome (45394077049354).

The spelling of 21350052044042 in words is "twenty-one trillion, three hundred fifty billion, fifty-two million, forty-four thousand, forty-two".