161106512 has 30 divisors (see below), whose sum is σ = 363107898. Its totient is φ = 69045312.

The previous prime is 161106499. The next prime is 161106541. The reversal of 161106512 is 215601161.

It can be written as a sum of positive squares in only one way, i.e., 124188736 + 36917776 = 11144^2 + 6076^2 .

It is a super-2 number, since 2×161106512² = 51910616417612288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101963 + ... + 103530.

Almost surely, 2^161106512 is an apocalyptic number.

It is an amenable number.

161106512 is an abundant number, since it is smaller than the sum of its proper divisors (202001386).

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

161106512 is a wasteful number, since it uses less digits than its factorization.

161106512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205515 (or 205502 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 161106512 is about 12692.7740072846. The cubic root of 161106512 is about 544.1321226086.

Adding to 161106512 its reverse (215601161), we get a palindrome (376707673).

It can be divided in two parts, 16110 and 6512, that added together give a palindrome (22622).

The spelling of 161106512 in words is "one hundred sixty-one million, one hundred six thousand, five hundred twelve".