161109394246 has 4 divisors (see below), whose sum is σ = 241664091372. Its totient is φ = 80554697122.

The previous prime is 161109394231. The next prime is 161109394249. The reversal of 161109394246 is 642493901161.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 161109394196 and 161109394205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161109394249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40277348560 + ... + 40277348563.

It is an arithmetic number, because the mean of its divisors is an integer number (60416022843).

Almost surely, 2^161109394246 is an apocalyptic number.

161109394246 is a deficient number, since it is larger than the sum of its proper divisors (80554697126).

161109394246 is an equidigital number, since it uses as much as digits as its factorization.

161109394246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80554697125.

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 161109394246 in words is "one hundred sixty-one billion, one hundred nine million, three hundred ninety-four thousand, two hundred forty-six".