161214329217744 has 240 divisors, whose sum is σ = 505945060580544. Its totient is φ = 47490134630400.

The previous prime is 161214329217727. The next prime is 161214329217803. The reversal of 161214329217744 is 447712923412161.

161214329217744 is a `hidden beast` number, since 1 + 6 + 1 + 2 + 143 + 292 + 177 + 44 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64592064 + ... + 67041504.

Almost surely, 2^{161214329217744} 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 161214329217744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252972530290272).

161214329217744 is an abundant number, since it is smaller than the sum of its proper divisors (344730731362800).

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

161214329217744 is a wasteful number, since it uses less digits than its factorization.

161214329217744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450626 (or 2450617 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The spelling of 161214329217744 in words is "one hundred sixty-one trillion, two hundred fourteen billion, three hundred twenty-nine million, two hundred seventeen thousand, seven hundred forty-four".