20126624026646 has 16 divisors (see below), whose sum is σ = 30334745664384. Its totient is φ = 10015070200704.

The previous prime is 20126624026609. The next prime is 20126624026651. The reversal of 20126624026646 is 64662042662102.

It is a self number, because there is not a number n which added to its sum of digits gives 20126624026646.

It is a congruent number.

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, 5579045 + ... + 8448608.

It is an arithmetic number, because the mean of its divisors is an integer number (1895921604024).

Almost surely, 2^{20126624026646} is an apocalyptic number.

20126624026646 is a deficient number, since it is larger than the sum of its proper divisors (10208121637738).

20126624026646 is a wasteful number, since it uses less digits than its factorization.

20126624026646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14031095.

The product of its (nonzero) digits is 1990656, while the sum is 47.

Adding to 20126624026646 its reverse (64662042662102), we get a palindrome (84788666688748).

The spelling of 20126624026646 in words is "twenty trillion, one hundred twenty-six billion, six hundred twenty-four million, twenty-six thousand, six hundred forty-six".