161333871064 has 16 divisors (see below), whose sum is σ = 303030790920. Its totient is φ = 80525660160.

The previous prime is 161333871029. The next prime is 161333871079. The reversal of 161333871064 is 460178333161.

It is a self number, because there is not a number n which added to its sum of digits gives 161333871064.

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 3 ways as a sum of consecutive naturals, for example, 17654569 + ... + 17663704.

Almost surely, 2^161333871064 is an apocalyptic number.

It is an amenable number.

161333871064 is a deficient number, since it is larger than the sum of its proper divisors (141696919856).

161333871064 is a wasteful number, since it uses less digits than its factorization.

161333871064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35318850 (or 35318846 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 161333871064 in words is "one hundred sixty-one billion, three hundred thirty-three million, eight hundred seventy-one thousand, sixty-four".