161286174035896 has 256 divisors, whose sum is σ = 382586067763200. Its totient is φ = 62412215404032.

The previous prime is 161286174035729. The next prime is 161286174035897. The reversal of 161286174035896 is 698530471682161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161286174035897) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 11547653505 + ... + 11547667471.

It is an arithmetic number, because the mean of its divisors is an integer number (1494476827200).

It is a 1-persistent number, because it is pandigital, but 2⋅161286174035896 = 322572348071792 is not.

Almost surely, 2^{161286174035896} 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 161286174035896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191293033881600).

161286174035896 is an abundant number, since it is smaller than the sum of its proper divisors (221299893727304).

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

161286174035896 is a wasteful number, since it uses less digits than its factorization.

161286174035896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16063 (or 16033 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 67.

The spelling of 161286174035896 in words is "one hundred sixty-one trillion, two hundred eighty-six billion, one hundred seventy-four million, thirty-five thousand, eight hundred ninety-six".