6641850513 has 16 divisors (see below), whose sum is σ = 9378564480. Its totient is φ = 4166620416.

The previous prime is 6641850511. The next prime is 6641850517. The reversal of 6641850513 is 3150581466.

It is not a de Polignac number, because 6641850513 - 2¹ = 6641850511 is a prime.

It is a super-2 number, since 2×6641850513² = 88228356474076726338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6641850511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351831 + ... + 370227.

It is an arithmetic number, because the mean of its divisors is an integer number (586160280).

Almost surely, 2^6641850513 is an apocalyptic number.

It is an amenable number.

6641850513 is a deficient number, since it is larger than the sum of its proper divisors (2736713967).

6641850513 is a wasteful number, since it uses less digits than its factorization.

6641850513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25496.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 6641850513 is about 81497.5491226577. The cubic root of 6641850513 is about 1879.7338646398.

The spelling of 6641850513 in words is "six billion, six hundred forty-one million, eight hundred fifty thousand, five hundred thirteen".