163645452545123 has 8 divisors (see below), whose sum is σ = 169301930724480. Its totient is φ = 157989876468480.

The previous prime is 163645452545117. The next prime is 163645452545143. The reversal of 163645452545123 is 321545254546361.

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 163645452545123 - 2¹² = 163645452541027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163645452545143) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 225156590 + ... + 225882227.

It is an arithmetic number, because the mean of its divisors is an integer number (21162741340560).

Almost surely, 2^{163645452545123} is an apocalyptic number.

163645452545123 is a deficient number, since it is larger than the sum of its proper divisors (5656478179357).

163645452545123 is a wasteful number, since it uses less digits than its factorization.

163645452545123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451051357.

The product of its digits is 51840000, while the sum is 56.

The spelling of 163645452545123 in words is "one hundred sixty-three trillion, six hundred forty-five billion, four hundred fifty-two million, five hundred forty-five thousand, one hundred twenty-three".