161516116 has 12 divisors (see below), whose sum is σ = 299279988. Its totient is φ = 76007552.

The previous prime is 161516101. The next prime is 161516123. The reversal of 161516116 is 611615161.

161516116 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 112572100 + 48944016 = 10610^2 + 6996^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187551 + ... + 1187686.

It is an arithmetic number, because the mean of its divisors is an integer number (24939999).

Almost surely, 2^161516116 is an apocalyptic number.

It is an amenable number.

161516116 is a deficient number, since it is larger than the sum of its proper divisors (137763872).

161516116 is a wasteful number, since it uses less digits than its factorization.

161516116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375258 (or 2375256 counting only the distinct ones).

The product of its digits is 1080, while the sum is 28.

The square root of 161516116 is about 12708.8990868604. The cubic root of 161516116 is about 544.5928738473.

The spelling of 161516116 in words is "one hundred sixty-one million, five hundred sixteen thousand, one hundred sixteen".