646340200311 has 32 divisors (see below), whose sum is σ = 1014370172928. Its totient is φ = 362275038720.

The previous prime is 646340200279. The next prime is 646340200349. The reversal of 646340200311 is 113002043646.

It is not a de Polignac number, because 646340200311 - 2⁵ = 646340200279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646340200211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15703191 + ... + 15744296.

It is an arithmetic number, because the mean of its divisors is an integer number (31699067904).

Almost surely, 2^646340200311 is an apocalyptic number.

646340200311 is a deficient number, since it is larger than the sum of its proper divisors (368029972617).

646340200311 is a wasteful number, since it uses less digits than its factorization.

646340200311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31447551.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 646340200311 its reverse (113002043646), we get a palindrome (759342243957).

The spelling of 646340200311 in words is "six hundred forty-six billion, three hundred forty million, two hundred thousand, three hundred eleven".