210442315641 has 4 divisors (see below), whose sum is σ = 280589754192. Its totient is φ = 140294877092.

The previous prime is 210442315639. The next prime is 210442315649. The reversal of 210442315641 is 146513244012.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210442315641 - 2¹ = 210442315639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210442315649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35073719271 + ... + 35073719276.

It is an arithmetic number, because the mean of its divisors is an integer number (70147438548).

Almost surely, 2^210442315641 is an apocalyptic number.

It is an amenable number.

210442315641 is a deficient number, since it is larger than the sum of its proper divisors (70147438551).

210442315641 is an equidigital number, since it uses as much as digits as its factorization.

210442315641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70147438550.

The product of its (nonzero) digits is 23040, while the sum is 33.

Adding to 210442315641 its reverse (146513244012), we get a palindrome (356955559653).

The spelling of 210442315641 in words is "two hundred ten billion, four hundred forty-two million, three hundred fifteen thousand, six hundred forty-one".