161727121676 has 12 divisors (see below), whose sum is σ = 284921943600. Its totient is φ = 80320852080.

The previous prime is 161727121639. The next prime is 161727121709. The reversal of 161727121676 is 676121727161.

It is a self number, because there is not a number n which added to its sum of digits gives 161727121676.

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, 135676520 + ... + 135677711.

It is an arithmetic number, because the mean of its divisors is an integer number (23743495300).

Almost surely, 2^161727121676 is an apocalyptic number.

It is an amenable number.

161727121676 is a deficient number, since it is larger than the sum of its proper divisors (123194821924).

161727121676 is a wasteful number, since it uses less digits than its factorization.

161727121676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271354384 (or 271354382 counting only the distinct ones).

The product of its digits is 296352, while the sum is 47.

The spelling of 161727121676 in words is "one hundred sixty-one billion, seven hundred twenty-seven million, one hundred twenty-one thousand, six hundred seventy-six".