211873191480 has 512 divisors, whose sum is σ = 765656064000. Its totient is φ = 51987640320.

The previous prime is 211873191433. The next prime is 211873191499. The reversal of 211873191480 is 84191378112.

It is a happy number.

211873191480 is a `hidden beast` number, since 2 + 1 + 1 + 87 + 3 + 1 + 91 + 480 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 65050012 + ... + 65053268.

It is an arithmetic number, because the mean of its divisors is an integer number (1495422000).

Almost surely, 2^211873191480 is an apocalyptic number.

211873191480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211873191480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (382828032000).

211873191480 is an abundant number, since it is smaller than the sum of its proper divisors (553782872520).

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

211873191480 is a wasteful number, since it uses less digits than its factorization.

211873191480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404 (or 3394 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The spelling of 211873191480 in words is "two hundred eleven billion, eight hundred seventy-three million, one hundred ninety-one thousand, four hundred eighty".