67416415817 has 2 divisors, whose sum is σ = 67416415818. Its totient is φ = 67416415816.

The previous prime is 67416415811. The next prime is 67416415837. The reversal of 67416415817 is 71851461476.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60337044496 + 7079371321 = 245636^2 + 84139^2 .

It is a cyclic number.

It is not a de Polignac number, because 67416415817 - 2²⁶ = 67349306953 is a prime.

It is a super-4 number, since 4×67416415817⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (67416415811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33708207908 + 33708207909.

It is an arithmetic number, because the mean of its divisors is an integer number (33708207909).

Almost surely, 2^67416415817 is an apocalyptic number.

It is an amenable number.

67416415817 is a deficient number, since it is larger than the sum of its proper divisors (1).

67416415817 is an equidigital number, since it uses as much as digits as its factorization.

67416415817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 50.

The spelling of 67416415817 in words is "sixty-seven billion, four hundred sixteen million, four hundred fifteen thousand, eight hundred seventeen".