212107894456 has 16 divisors (see below), whose sum is σ = 421096555440. Its totient is φ = 99815479680.

The previous prime is 212107894421. The next prime is 212107894459. The reversal of 212107894456 is 654498701212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212107894459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779808300 + ... + 779808571.

It is an arithmetic number, because the mean of its divisors is an integer number (26318534715).

Almost surely, 2^212107894456 is an apocalyptic number.

It is an amenable number.

212107894456 is a deficient number, since it is larger than the sum of its proper divisors (208988660984).

212107894456 is a wasteful number, since it uses less digits than its factorization.

212107894456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559616894 (or 1559616890 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 212107894456 in words is "two hundred twelve billion, one hundred seven million, eight hundred ninety-four thousand, four hundred fifty-six".