163604406504053 has 4 divisors (see below), whose sum is σ = 163604909990508. Its totient is φ = 163603903017600.

The previous prime is 163604406504041. The next prime is 163604406504089. The reversal of 163604406504053 is 350405604406361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 141620995813444 + 21983410690609 = 11900462^2 + 4688647^2 .

It is a cyclic number.

It is not a de Polignac number, because 163604406504053 - 2²⁴ = 163604389726837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163604406503989 and 163604406504007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163604406504953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251255498 + ... + 251905803.

It is an arithmetic number, because the mean of its divisors is an integer number (40901227497627).

Almost surely, 2^{163604406504053} is an apocalyptic number.

It is an amenable number.

163604406504053 is a deficient number, since it is larger than the sum of its proper divisors (503486455).

163604406504053 is an equidigital number, since it uses as much as digits as its factorization.

163604406504053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503486454.

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 163604406504053 in words is "one hundred sixty-three trillion, six hundred four billion, four hundred six million, five hundred four thousand, fifty-three".