13420636002 has 72 divisors (see below), whose sum is σ = 30746759472. Its totient is φ = 4228323120.

The previous prime is 13420635989. The next prime is 13420636027. The reversal of 13420636002 is 20063602431.

13420636002 is a `hidden beast` number, since 1 + 3 + 4 + 20 + 636 + 0 + 0 + 2 = 666.

It is a super-2 number, since 2×13420636002² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 734793 + ... + 752835.

It is an arithmetic number, because the mean of its divisors is an integer number (427038326).

Almost surely, 2^13420636002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13420636002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15373379736).

13420636002 is an abundant number, since it is smaller than the sum of its proper divisors (17326123470).

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

13420636002 is a wasteful number, since it uses less digits than its factorization.

13420636002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18156 (or 18122 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The spelling of 13420636002 in words is "thirteen billion, four hundred twenty million, six hundred thirty-six thousand, two".