161366140529 has 8 divisors (see below), whose sum is σ = 179019447840. Its totient is φ = 144210109600.

The previous prime is 161366140511. The next prime is 161366140531. The reversal of 161366140529 is 925041663161.

161366140529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161366140529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161366140529.

It is not an unprimeable number, because it can be changed into a prime (161366140729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124318412 + ... + 124319709.

It is an arithmetic number, because the mean of its divisors is an integer number (22377430980).

Almost surely, 2^161366140529 is an apocalyptic number.

It is an amenable number.

161366140529 is a deficient number, since it is larger than the sum of its proper divisors (17653307311).

161366140529 is a wasteful number, since it uses less digits than its factorization.

161366140529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248638191.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 161366140529 in words is "one hundred sixty-one billion, three hundred sixty-six million, one hundred forty thousand, five hundred twenty-nine".