212889864268 has 24 divisors (see below), whose sum is σ = 381318705152. Its totient is φ = 103942926864.

The previous prime is 212889864263. The next prime is 212889864277. The reversal of 212889864268 is 862468988212.

It is not an unprimeable number, because it can be changed into a prime (212889864263) 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, 526321 + ... + 838327.

Almost surely, 2^212889864268 is an apocalyptic number.

It is an amenable number.

212889864268 is a deficient number, since it is larger than the sum of its proper divisors (168428840884).

212889864268 is a wasteful number, since it uses less digits than its factorization.

212889864268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316021 (or 316019 counting only the distinct ones).

The product of its digits is 42467328, while the sum is 64.

The spelling of 212889864268 in words is "two hundred twelve billion, eight hundred eighty-nine million, eight hundred sixty-four thousand, two hundred sixty-eight".