105878165212 has 12 divisors (see below), whose sum is σ = 185401671336. Its totient is φ = 52906259120.

The previous prime is 105878165203. The next prime is 105878165213. The reversal of 105878165212 is 212561878501.

It is a super-2 number, since 2×105878165212² (a number of 23 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105878165213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8198614 + ... + 8211517.

It is an arithmetic number, because the mean of its divisors is an integer number (15450139278).

Almost surely, 2^105878165212 is an apocalyptic number.

It is an amenable number.

105878165212 is a deficient number, since it is larger than the sum of its proper divisors (79523506124).

105878165212 is a wasteful number, since it uses less digits than its factorization.

105878165212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16411748 (or 16411746 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 46.

The spelling of 105878165212 in words is "one hundred five billion, eight hundred seventy-eight million, one hundred sixty-five thousand, two hundred twelve".