161606155050200 has 192 divisors, whose sum is σ = 448095780034560. Its totient is φ = 52997001361920.

The previous prime is 161606155050173. The next prime is 161606155050343. The reversal of 161606155050200 is 2050551606161.

It is a happy number.

It is a super-2 number, since 2×161606155050200² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 1234257137 + ... + 1234388063.

It is an arithmetic number, because the mean of its divisors is an integer number (2333832187680).

Almost surely, 2^{161606155050200} is an apocalyptic number.

161606155050200 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 161606155050200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224047890017280).

161606155050200 is an abundant number, since it is smaller than the sum of its proper divisors (286489624984360).

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

161606155050200 is a wasteful number, since it uses less digits than its factorization.

161606155050200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169306 (or 169297 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 161606155050200 in words is "one hundred sixty-one trillion, six hundred six billion, one hundred fifty-five million, fifty thousand, two hundred".