163628686865 has 8 divisors (see below), whose sum is σ = 224405056320. Its totient is φ = 112202528112.

The previous prime is 163628686861. The next prime is 163628686873. The reversal of 163628686865 is 568686826361.

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 163628686865 - 2² = 163628686861 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (163628686861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2337552635 + ... + 2337552704.

It is an arithmetic number, because the mean of its divisors is an integer number (28050632040).

Almost surely, 2^163628686865 is an apocalyptic number.

It is an amenable number.

163628686865 is a deficient number, since it is larger than the sum of its proper divisors (60776369455).

163628686865 is an equidigital number, since it uses as much as digits as its factorization.

163628686865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4675105351.

The product of its digits is 119439360, while the sum is 65.

The spelling of 163628686865 in words is "one hundred sixty-three billion, six hundred twenty-eight million, six hundred eighty-six thousand, eight hundred sixty-five".