673996371871 has 2 divisors, whose sum is σ = 673996371872. Its totient is φ = 673996371870.

The previous prime is 673996371869. The next prime is 673996371943. The reversal of 673996371871 is 178173699376.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 673996371871 - 2¹ = 673996371869 is a prime.

It is a super-2 number, since 2×673996371871² (a number of 24 digits) contains 22 as substring.

Together with 673996371869, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 673996371797 and 673996371806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673996378871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336998185935 + 336998185936.

It is an arithmetic number, because the mean of its divisors is an integer number (336998185936).

Almost surely, 2^673996371871 is an apocalyptic number.

673996371871 is a deficient number, since it is larger than the sum of its proper divisors (1).

673996371871 is an equidigital number, since it uses as much as digits as its factorization.

673996371871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72013536, while the sum is 67.

The spelling of 673996371871 in words is "six hundred seventy-three billion, nine hundred ninety-six million, three hundred seventy-one thousand, eight hundred seventy-one".