161551106101176 has 128 divisors (see below), whose sum is σ = 442043478835200. Its totient is φ = 48794044464000.

The previous prime is 161551106101109. The next prime is 161551106101213. The reversal of 161551106101176 is 671101601155161.

161551106101176 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114149641 + ... + 115556231.

It is an arithmetic number, because the mean of its divisors is an integer number (3453464678400).

Almost surely, 2^{161551106101176} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161551106101176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221021739417600).

161551106101176 is an abundant number, since it is smaller than the sum of its proper divisors (280492372734024).

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

161551106101176 is a wasteful number, since it uses less digits than its factorization.

161551106101176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408041 (or 1408037 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 42.

The spelling of 161551106101176 in words is "one hundred sixty-one trillion, five hundred fifty-one billion, one hundred six million, one hundred one thousand, one hundred seventy-six".