20136423106552 has 64 divisors (see below), whose sum is σ = 40581745092000. Its totient is φ = 9332609273856.

The previous prime is 20136423106549. The next prime is 20136423106559. The reversal of 20136423106552 is 25560132463102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20136423106559) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 44505724 + ... + 44955892.

Almost surely, 2^{20136423106552} is an apocalyptic number.

It is an amenable number.

20136423106552 is an abundant number, since it is smaller than the sum of its proper divisors (20445321985448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20136423106552 is a wasteful number, since it uses less digits than its factorization.

20136423106552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455168 (or 455164 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

Adding to 20136423106552 its reverse (25560132463102), we get a palindrome (45696555569654).

The spelling of 20136423106552 in words is "twenty trillion, one hundred thirty-six billion, four hundred twenty-three million, one hundred six thousand, five hundred fifty-two".