161982218462 has 8 divisors (see below), whose sum is σ = 243673540056. Its totient is φ = 80757705112.

The previous prime is 161982218407. The next prime is 161982218471. The reversal of 161982218462 is 264812289161.

161982218462 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 161982218462.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116701193 + ... + 116702580.

It is an arithmetic number, because the mean of its divisors is an integer number (30459192507).

Almost surely, 2^161982218462 is an apocalyptic number.

161982218462 is a deficient number, since it is larger than the sum of its proper divisors (81691321594).

161982218462 is a wasteful number, since it uses less digits than its factorization.

161982218462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233404122.

The product of its digits is 663552, while the sum is 50.

The spelling of 161982218462 in words is "one hundred sixty-one billion, nine hundred eighty-two million, two hundred eighteen thousand, four hundred sixty-two".