211475928840 has 512 divisors, whose sum is σ = 744629760000. Its totient is φ = 47480832000.

The previous prime is 211475928733. The next prime is 211475928841. The reversal of 211475928840 is 48829574112.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (211475928841) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 470992936 + ... + 470993384.

It is an arithmetic number, because the mean of its divisors is an integer number (1454355000).

Almost surely, 2^211475928840 is an apocalyptic number.

211475928840 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 211475928840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372314880000).

211475928840 is an abundant number, since it is smaller than the sum of its proper divisors (533153831160).

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

211475928840 is a wasteful number, since it uses less digits than its factorization.

211475928840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 211475928840 in words is "two hundred eleven billion, four hundred seventy-five million, nine hundred twenty-eight thousand, eight hundred forty".