20126445115215 has 16 divisors (see below), whose sum is σ = 32222426096736. Its totient is φ = 10727399424000.

The previous prime is 20126445115211. The next prime is 20126445115241. The reversal of 20126445115215 is 51251154462102.

It is not a de Polignac number, because 20126445115215 - 2² = 20126445115211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20126445115211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419015026 + ... + 419063055.

It is an arithmetic number, because the mean of its divisors is an integer number (2013901631046).

Almost surely, 2^{20126445115215} is an apocalyptic number.

20126445115215 is a deficient number, since it is larger than the sum of its proper divisors (12095980981521).

20126445115215 is a wasteful number, since it uses less digits than its factorization.

20126445115215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838079690.

The product of its (nonzero) digits is 96000, while the sum is 39.

Adding to 20126445115215 its reverse (51251154462102), we get a palindrome (71377599577317).

The spelling of 20126445115215 in words is "twenty trillion, one hundred twenty-six billion, four hundred forty-five million, one hundred fifteen thousand, two hundred fifteen".