161065552330398 has 16 divisors (see below), whose sum is σ = 322134512463360. Its totient is φ = 53687949476376.

The previous prime is 161065552330271. The next prime is 161065552330399. The reversal of 161065552330398 is 893033255560161.

It is a super-2 number, since 2×161065552330398² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161065552330399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141377140 + ... + 142511847.

It is an arithmetic number, because the mean of its divisors is an integer number (20133407028960).

Almost surely, 2^{161065552330398} is an apocalyptic number.

161065552330398 is an abundant number, since it is smaller than the sum of its proper divisors (161068960132962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161065552330398 is a wasteful number, since it uses less digits than its factorization.

161065552330398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283983551.

The product of its (nonzero) digits is 17496000, while the sum is 57.

The spelling of 161065552330398 in words is "one hundred sixty-one trillion, sixty-five billion, five hundred fifty-two million, three hundred thirty thousand, three hundred ninety-eight".