6508791961 has 12 divisors (see below), whose sum is σ = 7815694080. Its totient is φ = 5398996680.

The previous prime is 6508791959. The next prime is 6508791967. The reversal of 6508791961 is 1691978056.

It is not a de Polignac number, because 6508791961 - 2¹ = 6508791959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6508791899 and 6508791908.

It is not an unprimeable number, because it can be changed into a prime (6508791967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2140941 + ... + 2143978.

It is an arithmetic number, because the mean of its divisors is an integer number (651307840).

Almost surely, 2^6508791961 is an apocalyptic number.

It is an amenable number.

6508791961 is a deficient number, since it is larger than the sum of its proper divisors (1306902119).

6508791961 is a wasteful number, since it uses less digits than its factorization.

6508791961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4284964 (or 4284957 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 6508791961 is about 80677.0844850011. The cubic root of 6508791961 is about 1867.0966375842.

The spelling of 6508791961 in words is "six billion, five hundred eight million, seven hundred ninety-one thousand, nine hundred sixty-one".