105512343443 has 4 divisors (see below), whose sum is σ = 113628677568. Its totient is φ = 97396009320.

The previous prime is 105512343407. The next prime is 105512343479. The reversal of 105512343443 is 344343215501.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (105512343407) and next prime (105512343479).

It is a cyclic number.

It is not a de Polignac number, because 105512343443 - 2¹⁴ = 105512327059 is a prime.

It is a super-2 number, since 2×105512343443² (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 (105512343743) 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, 4058167043 + ... + 4058167068.

It is an arithmetic number, because the mean of its divisors is an integer number (28407169392).

Almost surely, 2^105512343443 is an apocalyptic number.

105512343443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

105512343443 is a deficient number, since it is larger than the sum of its proper divisors (8116334125).

105512343443 is an equidigital number, since it uses as much as digits as its factorization.

105512343443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8116334124.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 105512343443 its reverse (344343215501), we get a palindrome (449855558944).

The spelling of 105512343443 in words is "one hundred five billion, five hundred twelve million, three hundred forty-three thousand, four hundred forty-three".