161315020684 has 6 divisors (see below), whose sum is σ = 282301286204. Its totient is φ = 80657510340.

The previous prime is 161315020679. The next prime is 161315020697. The reversal of 161315020684 is 486020513161.

It is a happy number.

It is a super-3 number, since 3×161315020684³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20164377582 + ... + 20164377589.

Almost surely, 2^161315020684 is an apocalyptic number.

It is an amenable number.

161315020684 is a deficient number, since it is larger than the sum of its proper divisors (120986265520).

161315020684 is a wasteful number, since it uses less digits than its factorization.

161315020684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40328755175 (or 40328755173 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 161315020684 in words is "one hundred sixty-one billion, three hundred fifteen million, twenty thousand, six hundred eighty-four".