161672794112 has 104 divisors (see below), whose sum is σ = 332692470912. Its totient is φ = 78498201600.

The previous prime is 161672794109. The next prime is 161672794133. The reversal of 161672794112 is 211497276161.

It is a super-3 number, since 3×161672794112³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138063287 + ... + 138064457.

Almost surely, 2^161672794112 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 161672794112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166346235456).

161672794112 is an abundant number, since it is smaller than the sum of its proper divisors (171019676800).

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

161672794112 is an equidigital number, since it uses as much as digits as its factorization.

161672794112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143 (or 2121 counting only the distinct ones).

The product of its digits is 254016, while the sum is 47.

The spelling of 161672794112 in words is "one hundred sixty-one billion, six hundred seventy-two million, seven hundred ninety-four thousand, one hundred twelve".