8143617663 has 8 divisors (see below), whose sum is σ = 12064618800. Its totient is φ = 5429078424.

The previous prime is 8143617653. The next prime is 8143617731. The reversal of 8143617663 is 3667163418.

It is not a de Polignac number, because 8143617663 - 2¹² = 8143613567 is a prime.

It is a super-2 number, since 2×8143617663² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8143617653) 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 7 ways as a sum of consecutive naturals, for example, 150807708 + ... + 150807761.

It is an arithmetic number, because the mean of its divisors is an integer number (1508077350).

Almost surely, 2^8143617663 is an apocalyptic number.

8143617663 is a deficient number, since it is larger than the sum of its proper divisors (3921001137).

8143617663 is a wasteful number, since it uses less digits than its factorization.

8143617663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301615478 (or 301615472 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 8143617663 is about 90241.9950078676. The cubic root of 8143617663 is about 2011.8972262553.

It can be divided in two parts, 81436 and 17663, that added together give a palindrome (99099).

The spelling of 8143617663 in words is "eight billion, one hundred forty-three million, six hundred seventeen thousand, six hundred sixty-three".