105512550543 has 12 divisors (see below), whose sum is σ = 153342031960. Its totient is φ = 69910155216.

The previous prime is 105512550511. The next prime is 105512550551. The reversal of 105512550543 is 345055215501.

105512550543 is a `hidden beast` number, since 1 + 0 + 5 + 51 + 2 + 550 + 54 + 3 = 666.

It is not a de Polignac number, because 105512550543 - 2⁵ = 105512550511 is a prime.

It is a super-2 number, since 2×105512550543² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105512550498 and 105512550507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105512550443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35960548 + ... + 35963481.

Almost surely, 2^105512550543 is an apocalyptic number.

105512550543 is a deficient number, since it is larger than the sum of its proper divisors (47829481417).

105512550543 is a wasteful number, since it uses less digits than its factorization.

105512550543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71924198 (or 71924195 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 105512550543 in words is "one hundred five billion, five hundred twelve million, five hundred fifty thousand, five hundred forty-three".