105643163056 has 20 divisors (see below), whose sum is σ = 204795473104. Its totient is φ = 52792718400.

The previous prime is 105643163047. The next prime is 105643163057. The reversal of 105643163056 is 650361346501.

It is a super-2 number, since 2×105643163056² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105643163057) 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, 1773735 + ... + 1832326.

Almost surely, 2^105643163056 is an apocalyptic number.

105643163056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

105643163056 is a deficient number, since it is larger than the sum of its proper divisors (99152310048).

105643163056 is a wasteful number, since it uses less digits than its factorization.

105643163056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3607900 (or 3607894 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 105643163056 in words is "one hundred five billion, six hundred forty-three million, one hundred sixty-three thousand, fifty-six".