211473067428 has 144 divisors (see below), whose sum is σ = 623565371520. Its totient is φ = 59174548992.

The previous prime is 211473067423. The next prime is 211473067471. The reversal of 211473067428 is 824760374112.

211473067428 is a `hidden beast` number, since 21 + 147 + 3 + 0 + 67 + 428 = 666.

It is not an unprimeable number, because it can be changed into a prime (211473067423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7585651 + ... + 7613477.

It is an arithmetic number, because the mean of its divisors is an integer number (4330315080).

Almost surely, 2^211473067428 is an apocalyptic number.

211473067428 is a gapful number since it is divisible by the number (28) 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 211473067428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311782685760).

211473067428 is an abundant number, since it is smaller than the sum of its proper divisors (412092304092).

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

211473067428 is a wasteful number, since it uses less digits than its factorization.

211473067428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28466 (or 28461 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 211473067428 in words is "two hundred eleven billion, four hundred seventy-three million, sixty-seven thousand, four hundred twenty-eight".