211656611060 has 48 divisors (see below), whose sum is σ = 446392054080. Its totient is φ = 84298506240.

The previous prime is 211656611029. The next prime is 211656611093. The reversal of 211656611060 is 60116656112.

It is a super-2 number, since 2×211656611060² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211656611060.

It is a congruent number.

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, 15099455 + ... + 15113465.

It is an arithmetic number, because the mean of its divisors is an integer number (9299834460).

Almost surely, 2^211656611060 is an apocalyptic number.

211656611060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211656611060 is an abundant number, since it is smaller than the sum of its proper divisors (234735443020).

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

211656611060 is a wasteful number, since it uses less digits than its factorization.

211656611060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17216 (or 17214 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 211656611060 in words is "two hundred eleven billion, six hundred fifty-six million, six hundred eleven thousand, sixty".