20331320434042 has 16 divisors (see below), whose sum is σ = 32683015694592. Its totient is φ = 9460872962640.

The previous prime is 20331320434037. The next prime is 20331320434097. The reversal of 20331320434042 is 24043402313302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20331320433995 and 20331320434013.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5972771634 + ... + 5972775037.

It is an arithmetic number, because the mean of its divisors is an integer number (2042688480912).

Almost surely, 2^{20331320434042} is an apocalyptic number.

20331320434042 is a deficient number, since it is larger than the sum of its proper divisors (12351695260550).

20331320434042 is a wasteful number, since it uses less digits than its factorization.

20331320434042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11945546733.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 20331320434042 its reverse (24043402313302), we get a palindrome (44374722747344).

The spelling of 20331320434042 in words is "twenty trillion, three hundred thirty-one billion, three hundred twenty million, four hundred thirty-four thousand, forty-two".