161326512 has 80 divisors (see below), whose sum is σ = 475629280. Its totient is φ = 52316928.

The previous prime is 161326493. The next prime is 161326523. The reversal of 161326512 is 215623161.

161326512 is a `hidden beast` number, since 1 + 6 + 1 + 3 + 2 + 651 + 2 = 666.

161326512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161326512² = 52052486948172288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10938 + ... + 21030.

It is an arithmetic number, because the mean of its divisors is an integer number (5945366).

Almost surely, 2^161326512 is an apocalyptic number.

161326512 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 161326512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237814640).

161326512 is an abundant number, since it is smaller than the sum of its proper divisors (314302768).

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

161326512 is a wasteful number, since it uses less digits than its factorization.

161326512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10147 (or 10135 counting only the distinct ones).

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

The square root of 161326512 is about 12701.4373989718. The cubic root of 161326512 is about 544.3796909553.

Adding to 161326512 its reverse (215623161), we get a palindrome (376949673).

The spelling of 161326512 in words is "one hundred sixty-one million, three hundred twenty-six thousand, five hundred twelve".