161112342528 has 180 divisors, whose sum is σ = 467068682080. Its totient is φ = 53514141696.

The previous prime is 161112342497. The next prime is 161112342617. The reversal of 161112342528 is 825243211161.

161112342528 is a `hidden beast` number, since 1 + 6 + 1 + 1 + 123 + 4 + 2 + 528 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 161112342492 and 161112342501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45267213 + ... + 45270771.

Almost surely, 2^161112342528 is an apocalyptic number.

161112342528 is a gapful number since it is divisible by the number (18) 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 161112342528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233534341040).

161112342528 is an abundant number, since it is smaller than the sum of its proper divisors (305956339552).

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

161112342528 is an equidigital number, since it uses as much as digits as its factorization.

161112342528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3900 (or 3871 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

Adding to 161112342528 its reverse (825243211161), we get a palindrome (986355553689).

The spelling of 161112342528 in words is "one hundred sixty-one billion, one hundred twelve million, three hundred forty-two thousand, five hundred twenty-eight".