13506215066 has 32 divisors (see below), whose sum is σ = 22334538240. Its totient is φ = 6104027776.

The previous prime is 13506215059. The next prime is 13506215123. The reversal of 13506215066 is 66051260531.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45011 + ... + 170406.

It is an arithmetic number, because the mean of its divisors is an integer number (697954320).

Almost surely, 2^13506215066 is an apocalyptic number.

13506215066 is a deficient number, since it is larger than the sum of its proper divisors (8828323174).

13506215066 is a wasteful number, since it uses less digits than its factorization.

13506215066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215518.

The product of its (nonzero) digits is 32400, while the sum is 35.

Adding to 13506215066 its reverse (66051260531), we get a palindrome (79557475597).

The spelling of 13506215066 in words is "thirteen billion, five hundred six million, two hundred fifteen thousand, sixty-six".