210188061138868 has 96 divisors (see below), whose sum is σ = 398884535562240. Its totient is φ = 96548262612480.

The previous prime is 210188061138863. The next prime is 210188061138889. The reversal of 210188061138868 is 868831160881012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210188061138863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2097991105 + ... + 2098091287.

It is an arithmetic number, because the mean of its divisors is an integer number (4155047245440).

Almost surely, 2^{210188061138868} is an apocalyptic number.

It is an amenable number.

210188061138868 is a deficient number, since it is larger than the sum of its proper divisors (188696474423372).

210188061138868 is a wasteful number, since it uses less digits than its factorization.

210188061138868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104597 (or 104595 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 61.

The spelling of 210188061138868 in words is "two hundred ten trillion, one hundred eighty-eight billion, sixty-one million, one hundred thirty-eight thousand, eight hundred sixty-eight".