161067187736 has 192 divisors, whose sum is σ = 392471402400. Its totient is φ = 61378394112.

The previous prime is 161067187717. The next prime is 161067187751. The reversal of 161067187736 is 637781760161.

It is a happy number.

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, 15991310 + ... + 16001378.

Almost surely, 2^161067187736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161067187736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196235701200).

161067187736 is an abundant number, since it is smaller than the sum of its proper divisors (231404214664).

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

161067187736 is a wasteful number, since it uses less digits than its factorization.

161067187736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10218 (or 10207 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 161067187736 in words is "one hundred sixty-one billion, sixty-seven million, one hundred eighty-seven thousand, seven hundred thirty-six".