162041643355666 has 8 divisors (see below), whose sum is σ = 243062986541004. Its totient is φ = 81020647842000.

The previous prime is 162041643355663. The next prime is 162041643355693. The reversal of 162041643355666 is 666553346140261.

It can be written as a sum of positive squares in 2 ways, for example, as 112897743862225 + 49143899493441 = 10625335^2 + 7010271^2 .

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 162041643355666.

It is not an unprimeable number, because it can be changed into a prime (162041643355663) by changing a digit.

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, 85749585 + ... + 87618916.

Almost surely, 2^{162041643355666} is an apocalyptic number.

162041643355666 is a deficient number, since it is larger than the sum of its proper divisors (81021343185338).

162041643355666 is a wasteful number, since it uses less digits than its factorization.

162041643355666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173835836.

The product of its (nonzero) digits is 55987200, while the sum is 58.

The spelling of 162041643355666 in words is "one hundred sixty-two trillion, forty-one billion, six hundred forty-three million, three hundred fifty-five thousand, six hundred sixty-six".