210668205462 has 128 divisors (see below), whose sum is σ = 534330639360. Its totient is φ = 54422269440.

The previous prime is 210668205427. The next prime is 210668205469. The reversal of 210668205462 is 264502866012.

It is a happy number.

210668205462 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210668205469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 388228 + ... + 756344.

It is an arithmetic number, because the mean of its divisors is an integer number (4174458120).

Almost surely, 2^210668205462 is an apocalyptic number.

210668205462 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 210668205462, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267165319680).

210668205462 is an abundant number, since it is smaller than the sum of its proper divisors (323662433898).

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

210668205462 is a wasteful number, since it uses less digits than its factorization.

210668205462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368198.

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 210668205462 in words is "two hundred ten billion, six hundred sixty-eight million, two hundred five thousand, four hundred sixty-two".