161037322832 has 80 divisors (see below), whose sum is σ = 338427482112. Its totient is φ = 73952040960.

The previous prime is 161037322801. The next prime is 161037322837. The reversal of 161037322832 is 238223730161.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161037322837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2068973 + ... + 2145395.

Almost surely, 2^161037322832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161037322832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169213741056).

161037322832 is an abundant number, since it is smaller than the sum of its proper divisors (177390159280).

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

161037322832 is a wasteful number, since it uses less digits than its factorization.

161037322832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76636 (or 76630 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 161037322832 in words is "one hundred sixty-one billion, thirty-seven million, three hundred twenty-two thousand, eight hundred thirty-two".