20126402107502 has 16 divisors (see below), whose sum is σ = 30640467137280. Its totient is φ = 9912915737208.

The previous prime is 20126402107477. The next prime is 20126402107519. The reversal of 20126402107502 is 20570120462102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15972449 + ... + 17186387.

It is an arithmetic number, because the mean of its divisors is an integer number (1915029196080).

Almost surely, 2^{20126402107502} is an apocalyptic number.

20126402107502 is a deficient number, since it is larger than the sum of its proper divisors (10514065029778).

20126402107502 is a wasteful number, since it uses less digits than its factorization.

20126402107502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337735.

The product of its (nonzero) digits is 13440, while the sum is 32.

Adding to 20126402107502 its reverse (20570120462102), we get a palindrome (40696522569604).

The spelling of 20126402107502 in words is "twenty trillion, one hundred twenty-six billion, four hundred two million, one hundred seven thousand, five hundred two".