210846420353 has 4 divisors (see below), whose sum is σ = 223249150980. Its totient is φ = 198443689728.

The previous prime is 210846420349. The next prime is 210846420457. The reversal of 210846420353 is 353024648012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 196791606544 + 14054813809 = 443612^2 + 118553^2 .

It is a cyclic number.

It is not a de Polignac number, because 210846420353 - 2² = 210846420349 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210846420053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6201365288 + ... + 6201365321.

It is an arithmetic number, because the mean of its divisors is an integer number (55812287745).

Almost surely, 2^210846420353 is an apocalyptic number.

It is an amenable number.

210846420353 is a deficient number, since it is larger than the sum of its proper divisors (12402730627).

210846420353 is a wasteful number, since it uses less digits than its factorization.

210846420353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12402730626.

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 210846420353 in words is "two hundred ten billion, eight hundred forty-six million, four hundred twenty thousand, three hundred fifty-three".