105405034012 has 12 divisors (see below), whose sum is σ = 184473082080. Its totient is φ = 52698439136.

The previous prime is 105405034003. The next prime is 105405034019. The reversal of 105405034012 is 210430504501.

It is a happy number.

It is a super-2 number, since 2×105405034012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105405034019) 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, 960937 + ... + 1064992.

It is an arithmetic number, because the mean of its divisors is an integer number (15372756840).

Almost surely, 2^105405034012 is an apocalyptic number.

It is an amenable number.

105405034012 is a deficient number, since it is larger than the sum of its proper divisors (79068048068).

105405034012 is a wasteful number, since it uses less digits than its factorization.

105405034012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038940 (or 2038938 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 105405034012 its reverse (210430504501), we get a palindrome (315835538513).

The spelling of 105405034012 in words is "one hundred five billion, four hundred five million, thirty-four thousand, twelve".