671166023699 has 2 divisors, whose sum is σ = 671166023700. Its totient is φ = 671166023698.

The previous prime is 671166023641. The next prime is 671166023747. The reversal of 671166023699 is 996320661176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 671166023699 - 2³⁶ = 602446546963 is a prime.

It is not a weakly prime, because it can be changed into another prime (671166023399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335583011849 + 335583011850.

It is an arithmetic number, because the mean of its divisors is an integer number (335583011850).

Almost surely, 2^671166023699 is an apocalyptic number.

671166023699 is a deficient number, since it is larger than the sum of its proper divisors (1).

671166023699 is an equidigital number, since it uses as much as digits as its factorization.

671166023699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4408992, while the sum is 56.

The spelling of 671166023699 in words is "six hundred seventy-one billion, one hundred sixty-six million, twenty-three thousand, six hundred ninety-nine".