211966259008 has 56 divisors (see below), whose sum is σ = 481884939200. Its totient is φ = 90620494848.

The previous prime is 211966259003. The next prime is 211966259023. The reversal of 211966259008 is 800952669112.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×211966259008² (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 (211966259003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395178 + ... + 761641.

It is an arithmetic number, because the mean of its divisors is an integer number (8605088200).

Almost surely, 2^211966259008 is an apocalyptic number.

211966259008 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

211966259008 is an abundant number, since it is smaller than the sum of its proper divisors (269918680192).

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

211966259008 is a wasteful number, since it uses less digits than its factorization.

211966259008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157247 (or 1157237 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 211966259008 in words is "two hundred eleven billion, nine hundred sixty-six million, two hundred fifty-nine thousand, eight".