67500816473 has 2 divisors, whose sum is σ = 67500816474. Its totient is φ = 67500816472.

The previous prime is 67500816419. The next prime is 67500816547. The reversal of 67500816473 is 37461800576.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58853304409 + 8647512064 = 242597^2 + 92992^2 .

It is a cyclic number.

It is not a de Polignac number, because 67500816473 - 2⁸ = 67500816217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (67500816373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33750408236 + 33750408237.

It is an arithmetic number, because the mean of its divisors is an integer number (33750408237).

Almost surely, 2^67500816473 is an apocalyptic number.

It is an amenable number.

67500816473 is a deficient number, since it is larger than the sum of its proper divisors (1).

67500816473 is an equidigital number, since it uses as much as digits as its factorization.

67500816473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 67500816473 in words is "sixty-seven billion, five hundred million, eight hundred sixteen thousand, four hundred seventy-three".