163003655401 has 4 divisors (see below), whose sum is σ = 163085200000. Its totient is φ = 162922110804.

The previous prime is 163003655377. The next prime is 163003655411. The reversal of 163003655401 is 104556300361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104556300361 = 195071 ⋅535991.

It is a cyclic number.

It is not a de Polignac number, because 163003655401 - 2⁷ = 163003655273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163003655411) 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, 40769301 + ... + 40773298.

It is an arithmetic number, because the mean of its divisors is an integer number (40771300000).

Almost surely, 2^163003655401 is an apocalyptic number.

It is an amenable number.

163003655401 is a deficient number, since it is larger than the sum of its proper divisors (81544599).

163003655401 is an equidigital number, since it uses as much as digits as its factorization.

163003655401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81544598.

The product of its (nonzero) digits is 32400, while the sum is 34.

Adding to 163003655401 its reverse (104556300361), we get a palindrome (267559955762).

The spelling of 163003655401 in words is "one hundred sixty-three billion, three million, six hundred fifty-five thousand, four hundred one".