161775045134 has 16 divisors (see below), whose sum is σ = 245676356640. Its totient is φ = 79887699360.

The previous prime is 161775045097. The next prime is 161775045143. The reversal of 161775045134 is 431540577161.

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 7 ways as a sum of consecutive naturals, for example, 1125269 + ... + 1260864.

It is an arithmetic number, because the mean of its divisors is an integer number (15354772290).

Almost surely, 2^161775045134 is an apocalyptic number.

161775045134 is a deficient number, since it is larger than the sum of its proper divisors (83901311506).

161775045134 is a wasteful number, since it uses less digits than its factorization.

161775045134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386555.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 161775045134 in words is "one hundred sixty-one billion, seven hundred seventy-five million, forty-five thousand, one hundred thirty-four".