645034204211 has 8 divisors (see below), whose sum is σ = 683599998960. Its totient is φ = 606537587968.

The previous prime is 645034204201. The next prime is 645034204219. The reversal of 645034204211 is 112402430546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 645034204211 - 2¹⁸ = 645033942067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (645034204219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17275421 + ... + 17312718.

It is an arithmetic number, because the mean of its divisors is an integer number (85449999870).

Almost surely, 2^645034204211 is an apocalyptic number.

645034204211 is a deficient number, since it is larger than the sum of its proper divisors (38565794749).

645034204211 is a wasteful number, since it uses less digits than its factorization.

645034204211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34589253.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 645034204211 its reverse (112402430546), we get a palindrome (757436634757).

The spelling of 645034204211 in words is "six hundred forty-five billion, thirty-four million, two hundred four thousand, two hundred eleven".