161013140352 has 192 divisors, whose sum is σ = 500902069200. Its totient is φ = 49471782912.

The previous prime is 161013140317. The next prime is 161013140363. The reversal of 161013140352 is 253041310161.

It is a happy number.

161013140352 is a `hidden beast` number, since 1 + 610 + 1 + 3 + 1 + 40 + 3 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 710448 + ... + 909264.

Almost surely, 2^161013140352 is an apocalyptic number.

161013140352 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 161013140352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250451034600).

161013140352 is an abundant number, since it is smaller than the sum of its proper divisors (339888928848).

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

161013140352 is a wasteful number, since it uses less digits than its factorization.

161013140352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198893 (or 198878 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 161013140352 in words is "one hundred sixty-one billion, thirteen million, one hundred forty thousand, three hundred fifty-two".