161071065792 has 1260 divisors, whose sum is σ = 636028492736. Its totient is φ = 38691717120.

The previous prime is 161071065787. The next prime is 161071065817. The reversal of 161071065792 is 297560170161.

161071065792 is a `hidden beast` number, since 1 + 6 + 1 + 0 + 71 + 0 + 6 + 579 + 2 = 666.

161071065792 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 5195840817 + ... + 5195840847.

Almost surely, 2^161071065792 is an apocalyptic number.

161071065792 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 161071065792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318014246368).

161071065792 is an abundant number, since it is smaller than the sum of its proper divisors (474957426944).

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

161071065792 is a wasteful number, since it uses less digits than its factorization.

161071065792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The spelling of 161071065792 in words is "one hundred sixty-one billion, seventy-one million, sixty-five thousand, seven hundred ninety-two".