212905465179169 has 8 divisors (see below), whose sum is σ = 243324991838720. Its totient is φ = 182487053570976.

The previous prime is 212905465179161. The next prime is 212905465179289. The reversal of 212905465179169 is 961971564509212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212905465179169 - 2³ = 212905465179161 is a prime.

It is a super-2 number, since 2×212905465179169² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212905465179161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278353644 + ... + 279117469.

It is an arithmetic number, because the mean of its divisors is an integer number (30415623979840).

Almost surely, 2^{212905465179169} is an apocalyptic number.

It is an amenable number.

212905465179169 is a deficient number, since it is larger than the sum of its proper divisors (30419526659551).

212905465179169 is an equidigital number, since it uses as much as digits as its factorization.

212905465179169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557525679.

The product of its (nonzero) digits is 73483200, while the sum is 67.

The spelling of 212905465179169 in words is "two hundred twelve trillion, nine hundred five billion, four hundred sixty-five million, one hundred seventy-nine thousand, one hundred sixty-nine".