210747730824 has 128 divisors (see below), whose sum is σ = 593152560000. Its totient is φ = 69326150400.

The previous prime is 210747730819. The next prime is 210747730859. The reversal of 210747730824 is 428037747012.

It is a self number, because there is not a number n which added to its sum of digits gives 210747730824.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5101002 + ... + 5142150.

It is an arithmetic number, because the mean of its divisors is an integer number (4634004375).

Almost surely, 2^210747730824 is an apocalyptic number.

210747730824 is a gapful number since it is divisible by the number (24) 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 210747730824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296576280000).

210747730824 is an abundant number, since it is smaller than the sum of its proper divisors (382404829176).

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

210747730824 is a wasteful number, since it uses less digits than its factorization.

210747730824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41476 (or 41466 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 45.

The spelling of 210747730824 in words is "two hundred ten billion, seven hundred forty-seven million, seven hundred thirty thousand, eight hundred twenty-four".