13505355161 has 4 divisors (see below), whose sum is σ = 13819433232. Its totient is φ = 13191277092.

The previous prime is 13505355139. The next prime is 13505355167. The reversal of 13505355161 is 16155350531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13505355161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13505355167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157038971 + ... + 157039056.

It is an arithmetic number, because the mean of its divisors is an integer number (3454858308).

Almost surely, 2^13505355161 is an apocalyptic number.

It is an amenable number.

13505355161 is a deficient number, since it is larger than the sum of its proper divisors (314078071).

13505355161 is an equidigital number, since it uses as much as digits as its factorization.

13505355161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314078070.

The product of its (nonzero) digits is 33750, while the sum is 35.

The spelling of 13505355161 in words is "thirteen billion, five hundred five million, three hundred fifty-five thousand, one hundred sixty-one".