163404553199 has 4 divisors (see below), whose sum is σ = 164931698664. Its totient is φ = 161877407736.

The previous prime is 163404553183. The next prime is 163404553223. The reversal of 163404553199 is 991355404361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 991355404361 = 7 ⋅141622200623.

It is a cyclic number.

It is not a de Polignac number, because 163404553199 - 2⁴ = 163404553183 is a prime.

It is a super-2 number, since 2×163404553199² (a number of 23 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 (163404543199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763572572 + ... + 763572785.

It is an arithmetic number, because the mean of its divisors is an integer number (41232924666).

Almost surely, 2^163404553199 is an apocalyptic number.

163404553199 is a deficient number, since it is larger than the sum of its proper divisors (1527145465).

163404553199 is a wasteful number, since it uses less digits than its factorization.

163404553199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527145464.

The product of its (nonzero) digits is 1749600, while the sum is 50.

The spelling of 163404553199 in words is "one hundred sixty-three billion, four hundred four million, five hundred fifty-three thousand, one hundred ninety-nine".