163646645414263 has 32 divisors (see below), whose sum is σ = 181308713713920. Its totient is φ = 146451745440000.

The previous prime is 163646645414233. The next prime is 163646645414333. The reversal of 163646645414263 is 362414546646361.

It is a happy number.

It is not a de Polignac number, because 163646645414263 - 2⁹ = 163646645413751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163646645414233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15436901163 + ... + 15436911763.

It is an arithmetic number, because the mean of its divisors is an integer number (5665897303560).

Almost surely, 2^{163646645414263} is an apocalyptic number.

163646645414263 is a deficient number, since it is larger than the sum of its proper divisors (17662068299657).

163646645414263 is a wasteful number, since it uses less digits than its factorization.

163646645414263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22639.

The product of its digits is 179159040, while the sum is 61.

The spelling of 163646645414263 in words is "one hundred sixty-three trillion, six hundred forty-six billion, six hundred forty-five million, four hundred fourteen thousand, two hundred sixty-three".