163606422010661 has 8 divisors (see below), whose sum is σ = 187754613524544. Its totient is φ = 139652191874880.

The previous prime is 163606422010637. The next prime is 163606422010667. The reversal of 163606422010661 is 166010224606361.

163606422010661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 163606422010661 - 2²² = 163606417816357 is a prime.

It is a super-2 number, since 2×163606422010661² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163606422010667) 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, 48490342715 + ... + 48490346088.

It is an arithmetic number, because the mean of its divisors is an integer number (23469326690568).

Almost surely, 2^{163606422010661} is an apocalyptic number.

It is an amenable number.

163606422010661 is a deficient number, since it is larger than the sum of its proper divisors (24148191513883).

163606422010661 is an equidigital number, since it uses as much as digits as its factorization.

163606422010661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96980689051.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 163606422010661 in words is "one hundred sixty-three trillion, six hundred six billion, four hundred twenty-two million, ten thousand, six hundred sixty-one".