161161150650 has 96 divisors (see below), whose sum is σ = 417209868288. Its totient is φ = 41092708800.

The previous prime is 161161150639. The next prime is 161161150723. The reversal of 161161150650 is 56051161161.

161161150650 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11747295 + ... + 11761005.

It is an arithmetic number, because the mean of its divisors is an integer number (4345936128).

Almost surely, 2^161161150650 is an apocalyptic number.

161161150650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 161161150650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208604934144).

161161150650 is an abundant number, since it is smaller than the sum of its proper divisors (256048717638).

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

161161150650 is a wasteful number, since it uses less digits than its factorization.

161161150650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17156 (or 17151 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 33.

The spelling of 161161150650 in words is "one hundred sixty-one billion, one hundred sixty-one million, one hundred fifty thousand, six hundred fifty".