161052851712 has 160 divisors (see below), whose sum is σ = 441297648000. Its totient is φ = 52156735488.

The previous prime is 161052851683. The next prime is 161052851753. The reversal of 161052851712 is 217158250161.

It is a super-2 number, since 2×161052851712² (a number of 23 digits) 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 (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48817039 + ... + 48820337.

It is an arithmetic number, because the mean of its divisors is an integer number (2758110300).

Almost surely, 2^161052851712 is an apocalyptic number.

161052851712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161052851712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220648824000).

161052851712 is an abundant number, since it is smaller than the sum of its proper divisors (280244796288).

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

161052851712 is an equidigital number, since it uses as much as digits as its factorization.

161052851712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4216 (or 4200 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 39.

The spelling of 161052851712 in words is "one hundred sixty-one billion, fifty-two million, eight hundred fifty-one thousand, seven hundred twelve".