161676780115200 has 1296 divisors, whose sum is σ = 649462791720960. Its totient is φ = 35249919344640.

The previous prime is 161676780115181. The next prime is 161676780115217. The reversal of 161676780115200 is 2511087676161.

It is a super-2 number, since 2×161676780115200² (a number of 29 digits) contains 22 as substring.

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 143 ways as a sum of consecutive naturals, for example, 7941282621 + ... + 7941302979.

Almost surely, 2^{161676780115200} is an apocalyptic number.

161676780115200 is a gapful number since it is divisible by the number (10) 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 161676780115200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324731395860480).

161676780115200 is an abundant number, since it is smaller than the sum of its proper divisors (487786011605760).

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

161676780115200 is a wasteful number, since it uses less digits than its factorization.

161676780115200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20792 (or 20766 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 51.

The spelling of 161676780115200 in words is "one hundred sixty-one trillion, six hundred seventy-six billion, seven hundred eighty million, one hundred fifteen thousand, two hundred".