161810080243200 has 360 divisors, whose sum is σ = 609551177578200. Its totient is φ = 40878335508480.

The previous prime is 161810080243193. The next prime is 161810080243211. The reversal of 161810080243200 is 2342080018161.

161810080243200 is a `hidden beast` number, since 1 + 61 + 81 + 0 + 0 + 80 + 243 + 200 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is a super-2 number, since 2×161810080243200² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 35 ways as a sum of consecutive naturals, for example, 34774395 + ... + 39151994.

It is an arithmetic number, because the mean of its divisors is an integer number (1693197715495).

Almost surely, 2^{161810080243200} is an apocalyptic number.

161810080243200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161810080243200 is an abundant number, since it is smaller than the sum of its proper divisors (447741097335000).

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

161810080243200 is a wasteful number, since it uses less digits than its factorization.

161810080243200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73926442 (or 73926418 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 161810080243200 in words is "one hundred sixty-one trillion, eight hundred ten billion, eighty million, two hundred forty-three thousand, two hundred".