212828956669 has 8 divisors (see below), whose sum is σ = 246658912128. Its totient is φ = 179855455920.

The previous prime is 212828956661. The next prime is 212828956679. The reversal of 212828956669 is 966659828212.

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

It is not a de Polignac number, because 212828956669 - 2³ = 212828956661 is a prime.

It is a super-2 number, since 2×212828956669² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212828956669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212828956661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214113142 + ... + 214114135.

It is an arithmetic number, because the mean of its divisors is an integer number (30832364016).

Almost surely, 2^212828956669 is an apocalyptic number.

It is an amenable number.

212828956669 is a deficient number, since it is larger than the sum of its proper divisors (33829955459).

212828956669 is an equidigital number, since it uses as much as digits as its factorization.

212828956669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428227355.

The product of its digits is 44789760, while the sum is 64.

The spelling of 212828956669 in words is "two hundred twelve billion, eight hundred twenty-eight million, nine hundred fifty-six thousand, six hundred sixty-nine".