161205546959546 has 8 divisors (see below), whose sum is σ = 245906766548640. Its totient is φ = 79236624776668.

The previous prime is 161205546959543. The next prime is 161205546959551. The reversal of 161205546959546 is 645959645502161.

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

It is a super-2 number, since 2×161205546959546² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161205546959543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 683074351406 + ... + 683074351641.

It is an arithmetic number, because the mean of its divisors is an integer number (30738345818580).

Almost surely, 2^{161205546959546} is an apocalyptic number.

161205546959546 is a deficient number, since it is larger than the sum of its proper divisors (84701219589094).

161205546959546 is a wasteful number, since it uses less digits than its factorization.

161205546959546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366148703108.

The product of its (nonzero) digits is 349920000, while the sum is 68.

The spelling of 161205546959546 in words is "one hundred sixty-one trillion, two hundred five billion, five hundred forty-six million, nine hundred fifty-nine thousand, five hundred forty-six".