161250023232 has 168 divisors, whose sum is σ = 499670527200. Its totient is φ = 49544690688.

The previous prime is 161250023189. The next prime is 161250023237. The reversal of 161250023232 is 232320052161.

It is a happy number.

161250023232 is a `hidden beast` number, since 1 + 612 + 5 + 0 + 0 + 23 + 23 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 161250023196 and 161250023205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161250023237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 205819 + ... + 604037.

Almost surely, 2^161250023232 is an apocalyptic number.

161250023232 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 161250023232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249835263600).

161250023232 is an abundant number, since it is smaller than the sum of its proper divisors (338420503968).

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

161250023232 is a wasteful number, since it uses less digits than its factorization.

161250023232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398293 (or 398280 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 161250023232 its reverse (232320052161), we get a palindrome (393570075393).

The spelling of 161250023232 in words is "one hundred sixty-one billion, two hundred fifty million, twenty-three thousand, two hundred thirty-two".