161416252145 has 16 divisors (see below), whose sum is σ = 194433642000. Its totient is φ = 128644386048.

The previous prime is 161416252103. The next prime is 161416252159. The reversal of 161416252145 is 541252614161.

It can be written as a sum of positive squares in 8 ways, for example, as 27250085776 + 134166166369 = 165076^2 + 366287^2 .

It is a cyclic number.

It is not a de Polignac number, because 161416252145 - 2¹⁰ = 161416251121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161416252099 and 161416252108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1562351 + ... + 1662459.

It is an arithmetic number, because the mean of its divisors is an integer number (12152102625).

Almost surely, 2^161416252145 is an apocalyptic number.

It is an amenable number.

161416252145 is a deficient number, since it is larger than the sum of its proper divisors (33017389855).

161416252145 is a wasteful number, since it uses less digits than its factorization.

161416252145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101332.

The product of its digits is 57600, while the sum is 38.

The spelling of 161416252145 in words is "one hundred sixty-one billion, four hundred sixteen million, two hundred fifty-two thousand, one hundred forty-five".