105978798212 has 24 divisors (see below), whose sum is σ = 212052219456. Its totient is φ = 45399208608.

The previous prime is 105978798199. The next prime is 105978798227. The reversal of 105978798212 is 212897879501.

It is a super-2 number, since 2×105978798212² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780923 + ... + 906530.

It is an arithmetic number, because the mean of its divisors is an integer number (8835509144).

Almost surely, 2^105978798212 is an apocalyptic number.

It is an amenable number.

105978798212 is an abundant number, since it is smaller than the sum of its proper divisors (106073421244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105978798212 is a wasteful number, since it uses less digits than its factorization.

105978798212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689707 (or 1689705 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 59.

The spelling of 105978798212 in words is "one hundred five billion, nine hundred seventy-eight million, seven hundred ninety-eight thousand, two hundred twelve".