13415445220 has 24 divisors (see below), whose sum is σ = 28234100664. Its totient is φ = 5354432256.

The previous prime is 13415445217. The next prime is 13415445227. The reversal of 13415445220 is 2254451431.

It can be written as a sum of positive squares in 4 ways, for example, as 5345656996 + 8069788224 = 73114^2 + 89832^2 .

It is not an unprimeable number, because it can be changed into a prime (13415445227) 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, 724747 + ... + 743026.

It is an arithmetic number, because the mean of its divisors is an integer number (1176420861).

Almost surely, 2^13415445220 is an apocalyptic number.

13415445220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13415445220 is an abundant number, since it is smaller than the sum of its proper divisors (14818655444).

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

13415445220 is a wasteful number, since it uses less digits than its factorization.

13415445220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468239 (or 1468237 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 13415445220 its reverse (2254451431), we get a palindrome (15669896651).

The spelling of 13415445220 in words is "thirteen billion, four hundred fifteen million, four hundred forty-five thousand, two hundred twenty".