161115741789 has 16 divisors (see below), whose sum is σ = 215254881984. Its totient is φ = 107193715200.

The previous prime is 161115741733. The next prime is 161115741793. The reversal of 161115741789 is 987147511161.

It is not a de Polignac number, because 161115741789 - 2²⁰ = 161114693213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161115741719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4107102 + ... + 4146144.

It is an arithmetic number, because the mean of its divisors is an integer number (13453430124).

Almost surely, 2^161115741789 is an apocalyptic number.

It is an amenable number.

161115741789 is a deficient number, since it is larger than the sum of its proper divisors (54139140195).

161115741789 is a wasteful number, since it uses less digits than its factorization.

161115741789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41788.

The product of its digits is 423360, while the sum is 51.

The spelling of 161115741789 in words is "one hundred sixty-one billion, one hundred fifteen million, seven hundred forty-one thousand, seven hundred eighty-nine".