161122705575 has 96 divisors (see below), whose sum is σ = 299839809024. Its totient is φ = 75750090240.

The previous prime is 161122705573. The next prime is 161122705607. The reversal of 161122705575 is 575507221161.

It is not a de Polignac number, because 161122705575 - 2¹ = 161122705573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161122705571) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 14638024 + ... + 14649026.

It is an arithmetic number, because the mean of its divisors is an integer number (3123331344).

Almost surely, 2^161122705575 is an apocalyptic number.

161122705575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161122705575 is a deficient number, since it is larger than the sum of its proper divisors (138717103449).

161122705575 is a wasteful number, since it uses less digits than its factorization.

161122705575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11705 (or 11700 counting only the distinct ones).

The product of its (nonzero) digits is 147000, while the sum is 42.

The spelling of 161122705575 in words is "one hundred sixty-one billion, one hundred twenty-two million, seven hundred five thousand, five hundred seventy-five".