163553100433 has 4 divisors (see below), whose sum is σ = 163565595648. Its totient is φ = 163540605220.

The previous prime is 163553100427. The next prime is 163553100449. The reversal of 163553100433 is 334001355361.

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: 334001355361 = 41 ⋅8146374521.

It is a cyclic number.

It is not a de Polignac number, because 163553100433 - 2⁹ = 163553099921 is a prime.

It is a super-2 number, since 2×163553100433² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163553100413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6227953 + ... + 6254158.

It is an arithmetic number, because the mean of its divisors is an integer number (40891398912).

Almost surely, 2^163553100433 is an apocalyptic number.

It is an amenable number.

163553100433 is a deficient number, since it is larger than the sum of its proper divisors (12495215).

163553100433 is a wasteful number, since it uses less digits than its factorization.

163553100433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12495214.

The product of its (nonzero) digits is 48600, while the sum is 34.

Adding to 163553100433 its reverse (334001355361), we get a palindrome (497554455794).

The spelling of 163553100433 in words is "one hundred sixty-three billion, five hundred fifty-three million, one hundred thousand, four hundred thirty-three".