163013341552661 has 8 divisors (see below), whose sum is σ = 176812175343384. Its totient is φ = 149682264839680.

The previous prime is 163013341552637. The next prime is 163013341552673. The reversal of 163013341552661 is 166255143310361.

It can be written as a sum of positive squares in 4 ways, for example, as 37497864602500 + 125515476950161 = 6123550^2 + 11203369^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 163013341552661 - 2⁶ = 163013341552597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163013341582661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116939268710 + ... + 116939270103.

It is an arithmetic number, because the mean of its divisors is an integer number (22101521917923).

Almost surely, 2^{163013341552661} is an apocalyptic number.

It is an amenable number.

163013341552661 is a deficient number, since it is larger than the sum of its proper divisors (13798833790723).

163013341552661 is a wasteful number, since it uses less digits than its factorization.

163013341552661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233878538871.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 163013341552661 in words is "one hundred sixty-three trillion, thirteen billion, three hundred forty-one million, five hundred fifty-two thousand, six hundred sixty-one".