640335030211 has 8 divisors (see below), whose sum is σ = 678204426960. Its totient is φ = 602488147968.

The previous prime is 640335030193. The next prime is 640335030217. The reversal of 640335030211 is 112030533046.

640335030211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 640335030211 - 2⁹ = 640335029699 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 640335030211.

It is not an unprimeable number, because it can be changed into a prime (640335030217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5570046 + ... + 5683843.

It is an arithmetic number, because the mean of its divisors is an integer number (84775553370).

Almost surely, 2^640335030211 is an apocalyptic number.

640335030211 is a deficient number, since it is larger than the sum of its proper divisors (37869396749).

640335030211 is a wasteful number, since it uses less digits than its factorization.

640335030211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11257253.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 640335030211 its reverse (112030533046), we get a palindrome (752365563257).

The spelling of 640335030211 in words is "six hundred forty billion, three hundred thirty-five million, thirty thousand, two hundred eleven".