161136428496 has 80 divisors (see below), whose sum is σ = 428620483200. Its totient is φ = 52125894144.

The previous prime is 161136428489. The next prime is 161136428527. The reversal of 161136428496 is 694824631161.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 574245 + ... + 807483.

It is an arithmetic number, because the mean of its divisors is an integer number (5357756040).

Almost surely, 2^161136428496 is an apocalyptic number.

161136428496 is a gapful number since it is divisible by the number (16) 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 161136428496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214310241600).

161136428496 is an abundant number, since it is smaller than the sum of its proper divisors (267484054704).

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

161136428496 is a wasteful number, since it uses less digits than its factorization.

161136428496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233676 (or 233670 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The spelling of 161136428496 in words is "one hundred sixty-one billion, one hundred thirty-six million, four hundred twenty-eight thousand, four hundred ninety-six".