20500636244133 has 32 divisors (see below), whose sum is σ = 28345619520000. Its totient is φ = 13163690748096.

The previous prime is 20500636244131. The next prime is 20500636244147. The reversal of 20500636244133 is 33144263600502.

It is not a de Polignac number, because 20500636244133 - 2¹ = 20500636244131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20500636244091 and 20500636244100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20500636244131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101789710 + ... + 101990912.

It is an arithmetic number, because the mean of its divisors is an integer number (885800610000).

Almost surely, 2^{20500636244133} is an apocalyptic number.

It is an amenable number.

20500636244133 is a deficient number, since it is larger than the sum of its proper divisors (7844983275867).

20500636244133 is a wasteful number, since it uses less digits than its factorization.

20500636244133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204081.

The product of its (nonzero) digits is 311040, while the sum is 39.

Adding to 20500636244133 its reverse (33144263600502), we get a palindrome (53644899844635).

The spelling of 20500636244133 in words is "twenty trillion, five hundred billion, six hundred thirty-six million, two hundred forty-four thousand, one hundred thirty-three".