20136500401563 has 192 divisors, whose sum is σ = 37671313680000. Its totient is φ = 10536636515328.

The previous prime is 20136500401561. The next prime is 20136500401583. The reversal of 20136500401563 is 36510400563102.

20136500401563 is a `hidden beast` number, since 2 + 0 + 1 + 3 + 6 + 50 + 0 + 40 + 1 + 563 = 666.

It is not a de Polignac number, because 20136500401563 - 2¹ = 20136500401561 is a prime.

It is a super-3 number, since 3×20136500401563³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20136500401561) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1182474333 + ... + 1182491361.

It is an arithmetic number, because the mean of its divisors is an integer number (196204758750).

Almost surely, 2^{20136500401563} is an apocalyptic number.

20136500401563 is a deficient number, since it is larger than the sum of its proper divisors (17534813278437).

20136500401563 is a wasteful number, since it uses less digits than its factorization.

20136500401563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17611 (or 17598 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 20136500401563 its reverse (36510400563102), we get a palindrome (56646900964665).

The spelling of 20136500401563 in words is "twenty trillion, one hundred thirty-six billion, five hundred million, four hundred one thousand, five hundred sixty-three".