20012440334 has 4 divisors (see below), whose sum is σ = 30018660504. Its totient is φ = 10006220166.

The previous prime is 20012440309. The next prime is 20012440339. The reversal of 20012440334 is 43304421002.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012440339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5003110082 + ... + 5003110085.

It is an arithmetic number, because the mean of its divisors is an integer number (7504665126).

Almost surely, 2^20012440334 is an apocalyptic number.

20012440334 is a deficient number, since it is larger than the sum of its proper divisors (10006220170).

20012440334 is a wasteful number, since it uses less digits than its factorization.

20012440334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10006220169.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20012440334 its reverse (43304421002), we get a palindrome (63316861336).

The spelling of 20012440334 in words is "twenty billion, twelve million, four hundred forty thousand, three hundred thirty-four".