67871617663 has 2 divisors, whose sum is σ = 67871617664. Its totient is φ = 67871617662.

The previous prime is 67871617643. The next prime is 67871617687. The reversal of 67871617663 is 36671617876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67871617663 - 2¹³ = 67871609471 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67871617598 and 67871617607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67871617613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33935808831 + 33935808832.

It is an arithmetic number, because the mean of its divisors is an integer number (33935808832).

Almost surely, 2^67871617663 is an apocalyptic number.

67871617663 is a deficient number, since it is larger than the sum of its proper divisors (1).

67871617663 is an equidigital number, since it uses as much as digits as its factorization.

67871617663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10668672, while the sum is 58.

The spelling of 67871617663 in words is "sixty-seven billion, eight hundred seventy-one million, six hundred seventeen thousand, six hundred sixty-three".