2164858967671 has 2 divisors, whose sum is σ = 2164858967672. Its totient is φ = 2164858967670.

The previous prime is 2164858967627. The next prime is 2164858967729. The reversal of 2164858967671 is 1767698584612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2164858967671 - 2⁷ = 2164858967543 is a prime.

It is a super-2 number, since 2×2164858967671² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2164858967671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2164858967071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082429483835 + 1082429483836.

It is an arithmetic number, because the mean of its divisors is an integer number (1082429483836).

Almost surely, 2^{2164858967671} is an apocalyptic number.

2164858967671 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164858967671 is an equidigital number, since it uses as much as digits as its factorization.

2164858967671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243855360, while the sum is 70.

The spelling of 2164858967671 in words is "two trillion, one hundred sixty-four billion, eight hundred fifty-eight million, nine hundred sixty-seven thousand, six hundred seventy-one".