20852816163042 has 32 divisors (see below), whose sum is σ = 42677301142080. Its totient is φ = 6789007330560.

The previous prime is 20852816163041. The next prime is 20852816163119. The reversal of 20852816163042 is 24036161825802.

It is a junction number, because it is equal to n+sod(n) for n = 20852816162982 and 20852816163000.

It is not an unprimeable number, because it can be changed into a prime (20852816163041) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4600134 + ... + 7928862.

It is an arithmetic number, because the mean of its divisors is an integer number (1333665660690).

Almost surely, 2^{20852816163042} is an apocalyptic number.

20852816163042 is an abundant number, since it is smaller than the sum of its proper divisors (21824484979038).

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

20852816163042 is a wasteful number, since it uses less digits than its factorization.

20852816163042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353058.

The product of its (nonzero) digits is 1105920, while the sum is 48.

Adding to 20852816163042 its reverse (24036161825802), we get a palindrome (44888977988844).

The spelling of 20852816163042 in words is "twenty trillion, eight hundred fifty-two billion, eight hundred sixteen million, one hundred sixty-three thousand, forty-two".