20323216213442 has 8 divisors (see below), whose sum is σ = 30506898780732. Its totient is φ = 10154249953200.

The previous prime is 20323216213303. The next prime is 20323216213453. The reversal of 20323216213442 is 24431261232302.

It can be written as a sum of positive squares in 2 ways, for example, as 20307181309801 + 16034903641 = 4506349^2 + 126629^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 3679073309 + ... + 3679078832.

Almost surely, 2^{20323216213442} is an apocalyptic number.

20323216213442 is a deficient number, since it is larger than the sum of its proper divisors (10183682567290).

20323216213442 is a wasteful number, since it uses less digits than its factorization.

20323216213442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7358153524.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 20323216213442 its reverse (24431261232302), we get a palindrome (44754477445744).

The spelling of 20323216213442 in words is "twenty trillion, three hundred twenty-three billion, two hundred sixteen million, two hundred thirteen thousand, four hundred forty-two".