13634040220 has 24 divisors (see below), whose sum is σ = 28642824000. Its totient is φ = 5451456192.

The previous prime is 13634040187. The next prime is 13634040223. The reversal of 13634040220 is 2204043631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13634040223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82740 + ... + 184699.

It is an arithmetic number, because the mean of its divisors is an integer number (1193451000).

Almost surely, 2^13634040220 is an apocalyptic number.

13634040220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13634040220 is an abundant number, since it is smaller than the sum of its proper divisors (15008783780).

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

13634040220 is a wasteful number, since it uses less digits than its factorization.

13634040220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269997 (or 269995 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 13634040220 its reverse (2204043631), we get a palindrome (15838083851).

The spelling of 13634040220 in words is "thirteen billion, six hundred thirty-four million, forty thousand, two hundred twenty".