20001444444202 has 16 divisors (see below), whose sum is σ = 32368032891432. Its totient is φ = 9214862397120.

The previous prime is 20001444444187. The next prime is 20001444444211. The reversal of 20001444444202 is 20244444410002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16075296378801 + 3926148065401 = 4009401^2 + 1981451^2 .

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, 690547749 + ... + 690576712.

Almost surely, 2^{20001444444202} is an apocalyptic number.

20001444444202 is a deficient number, since it is larger than the sum of its proper divisors (12366588447230).

20001444444202 is a wasteful number, since it uses less digits than its factorization.

20001444444202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381125033.

The product of its (nonzero) digits is 32768, while the sum is 31.

Adding to 20001444444202 its reverse (20244444410002), we get a palindrome (40245888854204).

The spelling of 20001444444202 in words is "twenty trillion, one billion, four hundred forty-four million, four hundred forty-four thousand, two hundred two".