20213434144 has 24 divisors (see below), whose sum is σ = 40098986928. Its totient is φ = 10029564480.

The previous prime is 20213434141. The next prime is 20213434169. The reversal of 20213434144 is 44143431202.

It is not an unprimeable number, because it can be changed into a prime (20213434141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2406762 + ... + 2415145.

It is an arithmetic number, because the mean of its divisors is an integer number (1670791122).

Almost surely, 2^20213434144 is an apocalyptic number.

It is an amenable number.

20213434144 is a deficient number, since it is larger than the sum of its proper divisors (19885552784).

20213434144 is a wasteful number, since it uses less digits than its factorization.

20213434144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4822048 (or 4822040 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 20213434144 its reverse (44143431202), we get a palindrome (64356865346).

The spelling of 20213434144 in words is "twenty billion, two hundred thirteen million, four hundred thirty-four thousand, one hundred forty-four".