161313443654444 has 24 divisors (see below), whose sum is σ = 292688652684288. Its totient is φ = 77711037927120.

The previous prime is 161313443654371. The next prime is 161313443654513. The reversal of 161313443654444 is 444456344313161.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2865423104 + ... + 2865479399.

It is an arithmetic number, because the mean of its divisors is an integer number (12195360528512).

Almost surely, 2^{161313443654444} is an apocalyptic number.

It is an amenable number.

161313443654444 is a deficient number, since it is larger than the sum of its proper divisors (131375209029844).

161313443654444 is a wasteful number, since it uses less digits than its factorization.

161313443654444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5730902765 (or 5730902763 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 53.

The spelling of 161313443654444 in words is "one hundred sixty-one trillion, three hundred thirteen billion, four hundred forty-three million, six hundred fifty-four thousand, four hundred forty-four".