212161879568 has 80 divisors (see below), whose sum is σ = 424258560000. Its totient is φ = 102729125376.

The previous prime is 212161879529. The next prime is 212161879603. The reversal of 212161879568 is 865978161212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30137393 + ... + 30144431.

It is an arithmetic number, because the mean of its divisors is an integer number (5303232000).

Almost surely, 2^212161879568 is an apocalyptic number.

It is an amenable number.

212161879568 is a deficient number, since it is larger than the sum of its proper divisors (212096680432).

212161879568 is a wasteful number, since it uses less digits than its factorization.

212161879568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7512 (or 7506 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 56.

The spelling of 212161879568 in words is "two hundred twelve billion, one hundred sixty-one million, eight hundred seventy-nine thousand, five hundred sixty-eight".