161822936143 has 16 divisors (see below), whose sum is σ = 177285870720. Its totient is φ = 146485620000.

The previous prime is 161822936117. The next prime is 161822936167. The reversal of 161822936143 is 341639228161.

It is a happy number.

161822936143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161822936143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161822936093 and 161822936102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161852936143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15619321 + ... + 15629677.

It is an arithmetic number, because the mean of its divisors is an integer number (11080366920).

Almost surely, 2^161822936143 is an apocalyptic number.

161822936143 is a deficient number, since it is larger than the sum of its proper divisors (15462934577).

161822936143 is a wasteful number, since it uses less digits than its factorization.

161822936143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16278.

The product of its digits is 373248, while the sum is 46.

The spelling of 161822936143 in words is "one hundred sixty-one billion, eight hundred twenty-two million, nine hundred thirty-six thousand, one hundred forty-three".