13505551208 has 32 divisors (see below), whose sum is σ = 25957418760. Its totient is φ = 6583787520.

The previous prime is 13505551181. The next prime is 13505551237. The reversal of 13505551208 is 80215550531.

It can be written as a sum of positive squares in 4 ways, for example, as 4507511044 + 8998040164 = 67138^2 + 94858^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524360 + ... + 549512.

Almost surely, 2^13505551208 is an apocalyptic number.

It is an amenable number.

13505551208 is a deficient number, since it is larger than the sum of its proper divisors (12451867552).

13505551208 is a wasteful number, since it uses less digits than its factorization.

13505551208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26837 (or 26833 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 35.

The spelling of 13505551208 in words is "thirteen billion, five hundred five million, five hundred fifty-one thousand, two hundred eight".