6671785751 has 2 divisors, whose sum is σ = 6671785752. Its totient is φ = 6671785750.

The previous prime is 6671785727. The next prime is 6671785777. The reversal of 6671785751 is 1575871766.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6671785751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6671785693 and 6671785702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6671785781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3335892875 + 3335892876.

It is an arithmetic number, because the mean of its divisors is an integer number (3335892876).

Almost surely, 2^6671785751 is an apocalyptic number.

6671785751 is a deficient number, since it is larger than the sum of its proper divisors (1).

6671785751 is an equidigital number, since it uses as much as digits as its factorization.

6671785751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2469600, while the sum is 53.

The square root of 6671785751 is about 81680.9999387863. Note that the first 4 decimals coincide. The cubic root of 6671785751 is about 1882.5536587945.

The spelling of 6671785751 in words is "six billion, six hundred seventy-one million, seven hundred eighty-five thousand, seven hundred fifty-one".