21373606050170 has 32 divisors (see below), whose sum is σ = 41973998242176. Its totient is φ = 7771478126400.

The previous prime is 21373606050089. The next prime is 21373606050187. The reversal of 21373606050170 is 7105060637312.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8120486 + ... + 10425425.

It is an arithmetic number, because the mean of its divisors is an integer number (1311687445068).

Almost surely, 2^{21373606050170} is an apocalyptic number.

21373606050170 is a deficient number, since it is larger than the sum of its proper divisors (20600392192006).

21373606050170 is a wasteful number, since it uses less digits than its factorization.

21373606050170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18556406.

The product of its (nonzero) digits is 158760, while the sum is 41.

Adding to 21373606050170 its reverse (7105060637312), we get a palindrome (28478666687482).

The spelling of 21373606050170 in words is "twenty-one trillion, three hundred seventy-three billion, six hundred six million, fifty thousand, one hundred seventy".