161500116 has 48 divisors (see below), whose sum is σ = 394377984. Its totient is φ = 51382656.

The previous prime is 161500081. The next prime is 161500117. The reversal of 161500116 is 611005161.

It is a junction number, because it is equal to n+sod(n) for n = 161500092 and 161500101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161500117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20101 + ... + 26963.

It is an arithmetic number, because the mean of its divisors is an integer number (8216208).

Almost surely, 2^161500116 is an apocalyptic number.

It is an amenable number.

161500116 is an abundant number, since it is smaller than the sum of its proper divisors (232877868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161500116 is a wasteful number, since it uses less digits than its factorization.

161500116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6960 (or 6958 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 161500116 is about 12708.2695910970. The cubic root of 161500116 is about 544.5748905567.

Adding to 161500116 its reverse (611005161), we get a palindrome (772505277).

The spelling of 161500116 in words is "one hundred sixty-one million, five hundred thousand, one hundred sixteen".