161849022600 has 96 divisors (see below), whose sum is σ = 502780320000. Its totient is φ = 43069559040.

The previous prime is 161849022589. The next prime is 161849022619. The reversal of 161849022600 is 6220948161.

It is a super-2 number, since 2×161849022600² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5826 + ... + 568974.

It is an arithmetic number, because the mean of its divisors is an integer number (5237295000).

Almost surely, 2^161849022600 is an apocalyptic number.

161849022600 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 161849022600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251390160000).

161849022600 is an abundant number, since it is smaller than the sum of its proper divisors (340931297400).

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

161849022600 is a wasteful number, since it uses less digits than its factorization.

161849022600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563647 (or 563638 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 161849022600 in words is "one hundred sixty-one billion, eight hundred forty-nine million, twenty-two thousand, six hundred".