20515042134112 has 12 divisors (see below), whose sum is σ = 40388989201596. Its totient is φ = 10257521067040.

The previous prime is 20515042134089. The next prime is 20515042134121. The reversal of 20515042134112 is 21143124051502.

It is a congruent number.

It is an unprimeable number.

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, 320547533314 + ... + 320547533377.

It is an arithmetic number, because the mean of its divisors is an integer number (3365749100133).

Almost surely, 2^{20515042134112} is an apocalyptic number.

It is an amenable number.

20515042134112 is a deficient number, since it is larger than the sum of its proper divisors (19873947067484).

20515042134112 is an equidigital number, since it uses as much as digits as its factorization.

20515042134112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641095066701 (or 641095066693 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 20515042134112 its reverse (21143124051502), we get a palindrome (41658166185614).

The spelling of 20515042134112 in words is "twenty trillion, five hundred fifteen billion, forty-two million, one hundred thirty-four thousand, one hundred twelve".