105105255543 has 6 divisors (see below), whose sum is σ = 151818702464. Its totient is φ = 70070170356.

The previous prime is 105105255523. The next prime is 105105255559. The reversal of 105105255543 is 345552501501.

105105255543 is a `hidden beast` number, since 1 + 0 + 5 + 10 + 52 + 55 + 543 = 666.

It is not a de Polignac number, because 105105255543 - 2⁵ = 105105255511 is a prime.

It is a super-2 number, since 2×105105255543² (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 = 105105255498 and 105105255507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105105255523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5839180855 + ... + 5839180872.

Almost surely, 2^105105255543 is an apocalyptic number.

105105255543 is a deficient number, since it is larger than the sum of its proper divisors (46713446921).

105105255543 is a wasteful number, since it uses less digits than its factorization.

105105255543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11678361733 (or 11678361730 counting only the distinct ones).

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

The spelling of 105105255543 in words is "one hundred five billion, one hundred five million, two hundred fifty-five thousand, five hundred forty-three".