161055055116 has 72 divisors (see below), whose sum is σ = 417120788448. Its totient is φ = 52365600000.

The previous prime is 161055055111. The next prime is 161055055153. The reversal of 161055055116 is 611550550161.

It is a happy number.

161055055116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (161055055111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15331866 + ... + 15342366.

It is an arithmetic number, because the mean of its divisors is an integer number (5793344284).

Almost surely, 2^161055055116 is an apocalyptic number.

It is an amenable number.

161055055116 is an abundant number, since it is smaller than the sum of its proper divisors (256065733332).

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

161055055116 is a wasteful number, since it uses less digits than its factorization.

161055055116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20943 (or 20938 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 161055055116 in words is "one hundred sixty-one billion, fifty-five million, fifty-five thousand, one hundred sixteen".