6499211943 has 16 divisors (see below), whose sum is σ = 9939322880. Its totient is φ = 3700424736.

The previous prime is 6499211941. The next prime is 6499211947. The reversal of 6499211943 is 3491129946.

It is a happy number.

It is not a de Polignac number, because 6499211943 - 2¹ = 6499211941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6499211892 and 6499211901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6499211941) 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, 552823 + ... + 564456.

It is an arithmetic number, because the mean of its divisors is an integer number (621207680).

Almost surely, 2^6499211943 is an apocalyptic number.

6499211943 is a deficient number, since it is larger than the sum of its proper divisors (3440110937).

6499211943 is a wasteful number, since it uses less digits than its factorization.

6499211943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117566.

The product of its digits is 419904, while the sum is 48.

The square root of 6499211943 is about 80617.6900128005. The cubic root of 6499211943 is about 1866.1801540387.

The spelling of 6499211943 in words is "six billion, four hundred ninety-nine million, two hundred eleven thousand, nine hundred forty-three".