163421166635 has 8 divisors (see below), whose sum is σ = 196125326016. Its totient is φ = 130723649280.

The previous prime is 163421166613. The next prime is 163421166641. The reversal of 163421166635 is 536661124361.

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

It is not a de Polignac number, because 163421166635 - 2¹⁴ = 163421150251 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1606214 + ... + 1704923.

It is an arithmetic number, because the mean of its divisors is an integer number (24515665752).

Almost surely, 2^163421166635 is an apocalyptic number.

163421166635 is a deficient number, since it is larger than the sum of its proper divisors (32704159381).

163421166635 is an equidigital number, since it uses as much as digits as its factorization.

163421166635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3321013.

The product of its digits is 466560, while the sum is 44.

The spelling of 163421166635 in words is "one hundred sixty-three billion, four hundred twenty-one million, one hundred sixty-six thousand, six hundred thirty-five".