211204260656 has 20 divisors (see below), whose sum is σ = 418724727432. Its totient is φ = 103146266496.

The previous prime is 211204260653. The next prime is 211204260667. The reversal of 211204260656 is 656062402112.

It is not an unprimeable number, because it can be changed into a prime (211204260653) 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, 153490781 + ... + 153492156.

Almost surely, 2^211204260656 is an apocalyptic number.

It is an amenable number.

211204260656 is a deficient number, since it is larger than the sum of its proper divisors (207520466776).

211204260656 is a wasteful number, since it uses less digits than its factorization.

211204260656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306982988 (or 306982982 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

Adding to 211204260656 its reverse (656062402112), we get a palindrome (867266662768).

The spelling of 211204260656 in words is "two hundred eleven billion, two hundred four million, two hundred sixty thousand, six hundred fifty-six".