161164536192 has 384 divisors, whose sum is σ = 528940339200. Its totient is φ = 48440125440.

The previous prime is 161164536191. The next prime is 161164536193. The reversal of 161164536192 is 291635461161.

161164536192 is a `hidden beast` number, since 1 + 6 + 1 + 1 + 6 + 453 + 6 + 192 = 666.

It is an interprime number because it is at equal distance from previous prime (161164536191) and next prime (161164536193).

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161164536191) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43450434 + ... + 43454142.

It is an arithmetic number, because the mean of its divisors is an integer number (1377448800).

Almost surely, 2^161164536192 is an apocalyptic number.

161164536192 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 161164536192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264470169600).

161164536192 is an abundant number, since it is smaller than the sum of its proper divisors (367775803008).

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

161164536192 is a wasteful number, since it uses less digits than its factorization.

161164536192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3876 (or 3852 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The spelling of 161164536192 in words is "one hundred sixty-one billion, one hundred sixty-four million, five hundred thirty-six thousand, one hundred ninety-two".