13506467220 has 36 divisors (see below), whose sum is σ = 40969617780. Its totient is φ = 3601724544.

The previous prime is 13506467209. The next prime is 13506467237. The reversal of 13506467220 is 2276460531.

13506467220 is a `hidden beast` number, since 1 + 3 + 5 + 0 + 646 + 7 + 2 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8079492996 + 5426974224 = 89886^2 + 73668^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37517785 + ... + 37518144.

Almost surely, 2^13506467220 is an apocalyptic number.

13506467220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13506467220 is an abundant number, since it is smaller than the sum of its proper divisors (27463150560).

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

13506467220 is a wasteful number, since it uses less digits than its factorization.

13506467220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75035944 (or 75035939 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 13506467220 in words is "thirteen billion, five hundred six million, four hundred sixty-seven thousand, two hundred twenty".