210645532320133 has 4 divisors (see below), whose sum is σ = 210647802520288. Its totient is φ = 210643262119980.

The previous prime is 210645532320071. The next prime is 210645532320227. The reversal of 210645532320133 is 331023235546012.

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 210645532320133 - 2²⁵ = 210645498765701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210645532320233) 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, 1134960891 + ... + 1135146472.

It is an arithmetic number, because the mean of its divisors is an integer number (52661950630072).

Almost surely, 2^{210645532320133} is an apocalyptic number.

It is an amenable number.

210645532320133 is a deficient number, since it is larger than the sum of its proper divisors (2270200155).

210645532320133 is an equidigital number, since it uses as much as digits as its factorization.

210645532320133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270200154.

The product of its (nonzero) digits is 388800, while the sum is 40.

Adding to 210645532320133 its reverse (331023235546012), we get a palindrome (541668767866145).

The spelling of 210645532320133 in words is "two hundred ten trillion, six hundred forty-five billion, five hundred thirty-two million, three hundred twenty thousand, one hundred thirty-three".