211653848568 has 32 divisors (see below), whose sum is σ = 529146570960. Its totient is φ = 70549689600.

The previous prime is 211653848551. The next prime is 211653848569. The reversal of 211653848568 is 865848356112.

It is a super-2 number, since 2×211653848568² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211653848569) 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, 1528618 + ... + 1661318.

Almost surely, 2^211653848568 is an apocalyptic number.

It is an amenable number.

211653848568 is an abundant number, since it is smaller than the sum of its proper divisors (317492722392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211653848568 is a wasteful number, since it uses less digits than its factorization.

211653848568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199167 (or 199163 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 57.

The spelling of 211653848568 in words is "two hundred eleven billion, six hundred fifty-three million, eight hundred forty-eight thousand, five hundred sixty-eight".