6501616642443 has 32 divisors (see below), whose sum is σ = 9441068313600. Its totient is φ = 3955822523136.

The previous prime is 6501616642387. The next prime is 6501616642459. The reversal of 6501616642443 is 3442466161056.

It is not a de Polignac number, because 6501616642443 - 2⁹ = 6501616641931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6501616642392 and 6501616642401.

It is not an unprimeable number, because it can be changed into a prime (6501616642463) 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, 81969678 + ... + 82048956.

It is an arithmetic number, because the mean of its divisors is an integer number (295033384800).

Almost surely, 2^{6501616642443} is an apocalyptic number.

6501616642443 is a deficient number, since it is larger than the sum of its proper divisors (2939451671157).

6501616642443 is a wasteful number, since it uses less digits than its factorization.

6501616642443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103011.

The product of its (nonzero) digits is 2488320, while the sum is 48.

The spelling of 6501616642443 in words is "six trillion, five hundred one billion, six hundred sixteen million, six hundred forty-two thousand, four hundred forty-three".