161835870000 has 200 divisors, whose sum is σ = 597061079296. Its totient is φ = 36991008000.

The previous prime is 161835869963. The next prime is 161835870041. The reversal of 161835870000 is 78538161.

161835870000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (200).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 175324 + ... + 595323.

Almost surely, 2^161835870000 is an apocalyptic number.

161835870000 is a gapful number since it is divisible by the number (10) 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 161835870000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (298530539648).

161835870000 is an abundant number, since it is smaller than the sum of its proper divisors (435225209296).

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

161835870000 is an equidigital number, since it uses as much as digits as its factorization.

161835870000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770685 (or 770664 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 161835870000 in words is "one hundred sixty-one billion, eight hundred thirty-five million, eight hundred seventy thousand".