636132885213 has 32 divisors (see below), whose sum is σ = 1019212204032. Its totient is φ = 345045729600.

The previous prime is 636132885191. The next prime is 636132885217. The reversal of 636132885213 is 312588231636.

It is a happy number.

It is not a de Polignac number, because 636132885213 - 2⁶ = 636132885149 is a prime.

It is a super-4 number, since 4×636132885213⁴ (a number of 48 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (636132885217) 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 31 ways as a sum of consecutive naturals, for example, 4963618 + ... + 5090163.

It is an arithmetic number, because the mean of its divisors is an integer number (31850381376).

Almost surely, 2^636132885213 is an apocalyptic number.

It is an amenable number.

636132885213 is a deficient number, since it is larger than the sum of its proper divisors (383079318819).

636132885213 is a wasteful number, since it uses less digits than its factorization.

636132885213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10053945.

The product of its digits is 1244160, while the sum is 48.

The spelling of 636132885213 in words is "six hundred thirty-six billion, one hundred thirty-two million, eight hundred eighty-five thousand, two hundred thirteen".