13552542161 has 4 divisors (see below), whose sum is σ = 13610707812. Its totient is φ = 13494376512.

The previous prime is 13552542127. The next prime is 13552542163. The reversal of 13552542161 is 16124525531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16124525531 = 8317 ⋅1938743.

It can be written as a sum of positive squares in 2 ways, for example, as 6972250000 + 6580292161 = 83500^2 + 81119^2 .

It is a cyclic number.

It is not a de Polignac number, because 13552542161 - 2¹⁸ = 13552280017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13552542163) 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, 29082476 + ... + 29082941.

It is an arithmetic number, because the mean of its divisors is an integer number (3402676953).

Almost surely, 2^13552542161 is an apocalyptic number.

It is an amenable number.

13552542161 is a deficient number, since it is larger than the sum of its proper divisors (58165651).

13552542161 is an equidigital number, since it uses as much as digits as its factorization.

13552542161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58165650.

The product of its digits is 36000, while the sum is 35.

The spelling of 13552542161 in words is "thirteen billion, five hundred fifty-two million, five hundred forty-two thousand, one hundred sixty-one".