20001132444434 has 16 divisors (see below), whose sum is σ = 31581283013280. Its totient is φ = 9474056359200.

The previous prime is 20001132444427. The next prime is 20001132444437. The reversal of 20001132444434 is 43444423110002.

It is a self number, because there is not a number n which added to its sum of digits gives 20001132444434.

It is not an unprimeable number, because it can be changed into a prime (20001132444437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2328467 + ... + 6739734.

It is an arithmetic number, because the mean of its divisors is an integer number (1973830188330).

Almost surely, 2^{20001132444434} is an apocalyptic number.

20001132444434 is a deficient number, since it is larger than the sum of its proper divisors (11580150568846).

20001132444434 is a wasteful number, since it uses less digits than its factorization.

20001132444434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9126265.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 20001132444434 its reverse (43444423110002), we get a palindrome (63445555554436).

The spelling of 20001132444434 in words is "twenty trillion, one billion, one hundred thirty-two million, four hundred forty-four thousand, four hundred thirty-four".