646144340110 has 16 divisors (see below), whose sum is σ = 1200577871232. Its totient is φ = 250120389600.

The previous prime is 646144340089. The next prime is 646144340147. The reversal of 646144340110 is 11043441646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1042167981 + ... + 1042168600.

It is an arithmetic number, because the mean of its divisors is an integer number (75036116952).

Almost surely, 2^646144340110 is an apocalyptic number.

646144340110 is a deficient number, since it is larger than the sum of its proper divisors (554433531122).

646144340110 is a wasteful number, since it uses less digits than its factorization.

646144340110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2084336619.

The product of its (nonzero) digits is 27648, while the sum is 34.

Adding to 646144340110 its reverse (11043441646), we get a palindrome (657187781756).

The spelling of 646144340110 in words is "six hundred forty-six billion, one hundred forty-four million, three hundred forty thousand, one hundred ten".