786644661071 has 2 divisors, whose sum is σ = 786644661072. Its totient is φ = 786644661070.

The previous prime is 786644661059. The next prime is 786644661107. The reversal of 786644661071 is 170166446687.

Together with next prime (786644661107) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 786644661071 - 2⁶ = 786644661007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 786644660998 and 786644661016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (786644663071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393322330535 + 393322330536.

It is an arithmetic number, because the mean of its divisors is an integer number (393322330536).

Almost surely, 2^786644661071 is an apocalyptic number.

786644661071 is a deficient number, since it is larger than the sum of its proper divisors (1).

786644661071 is an equidigital number, since it uses as much as digits as its factorization.

786644661071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 786644661071 in words is "seven hundred eighty-six billion, six hundred forty-four million, six hundred sixty-one thousand, seventy-one".