3861773687971 has 2 divisors, whose sum is σ = 3861773687972. Its totient is φ = 3861773687970.

The previous prime is 3861773687909. The next prime is 3861773687987. The reversal of 3861773687971 is 1797863771683.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3861773687971 - 2⁷ = 3861773687843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3861773687894 and 3861773687903.

It is not a weakly prime, because it can be changed into another prime (3861773657971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1930886843985 + 1930886843986.

It is an arithmetic number, because the mean of its divisors is an integer number (1930886843986).

Almost surely, 2^{3861773687971} is an apocalyptic number.

3861773687971 is a deficient number, since it is larger than the sum of its proper divisors (1).

3861773687971 is an equidigital number, since it uses as much as digits as its factorization.

3861773687971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448084224, while the sum is 73.

The spelling of 3861773687971 in words is "three trillion, eight hundred sixty-one billion, seven hundred seventy-three million, six hundred eighty-seven thousand, nine hundred seventy-one".