161205280112686 has 8 divisors (see below), whose sum is σ = 241808858971344. Its totient is φ = 80602327122240.

The previous prime is 161205280112659. The next prime is 161205280112777. The reversal of 161205280112686 is 686211082502161.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155822595 + ... + 156853726.

It is an arithmetic number, because the mean of its divisors is an integer number (30226107371418).

Almost surely, 2^{161205280112686} is an apocalyptic number.

161205280112686 is a deficient number, since it is larger than the sum of its proper divisors (80603578858658).

161205280112686 is a wasteful number, since it uses less digits than its factorization.

161205280112686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312934106.

The product of its (nonzero) digits is 552960, while the sum is 49.

The spelling of 161205280112686 in words is "one hundred sixty-one trillion, two hundred five billion, two hundred eighty million, one hundred twelve thousand, six hundred eighty-six".