161368064 has 192 divisors, whose sum is σ = 412776000. Its totient is φ = 61931520.

The previous prime is 161368049. The next prime is 161368139. The reversal of 161368064 is 460863161.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5564402 + ... + 5564430.

It is an arithmetic number, because the mean of its divisors is an integer number (2149875).

Almost surely, 2^161368064 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 161368064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206388000).

161368064 is an abundant number, since it is smaller than the sum of its proper divisors (251407936).

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

161368064 is a wasteful number, since it uses less digits than its factorization.

161368064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 161368064 is about 12703.0730140388. The cubic root of 161368064 is about 544.4264245906.

The spelling of 161368064 in words is "one hundred sixty-one million, three hundred sixty-eight thousand, sixty-four".