163556316310666 has 8 divisors (see below), whose sum is σ = 247627320022080. Its totient is φ = 81013876303308.

The previous prime is 163556316310631. The next prime is 163556316310691. The reversal of 163556316310666 is 666013613655361.

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

It is a super-2 number, since 2×163556316310666² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 163556316310666.

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, 382140925746 + ... + 382140926173.

It is an arithmetic number, because the mean of its divisors is an integer number (30953415002760).

Almost surely, 2^{163556316310666} is an apocalyptic number.

163556316310666 is a deficient number, since it is larger than the sum of its proper divisors (84071003711414).

163556316310666 is a wasteful number, since it uses less digits than its factorization.

163556316310666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764281852028.

The product of its (nonzero) digits is 31492800, while the sum is 58.

The spelling of 163556316310666 in words is "one hundred sixty-three trillion, five hundred fifty-six billion, three hundred sixteen million, three hundred ten thousand, six hundred sixty-six".