67850453689 has 2 divisors, whose sum is σ = 67850453690. Its totient is φ = 67850453688.

The previous prime is 67850453687. The next prime is 67850453717. The reversal of 67850453689 is 98635405876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50032742400 + 17817711289 = 223680^2 + 133483^2 .

It is a cyclic number.

It is not a de Polignac number, because 67850453689 - 2¹ = 67850453687 is a prime.

Together with 67850453687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (67850453687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33925226844 + 33925226845.

It is an arithmetic number, because the mean of its divisors is an integer number (33925226845).

Almost surely, 2^67850453689 is an apocalyptic number.

It is an amenable number.

67850453689 is a deficient number, since it is larger than the sum of its proper divisors (1).

67850453689 is an equidigital number, since it uses as much as digits as its factorization.

67850453689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43545600, while the sum is 61.

The spelling of 67850453689 in words is "sixty-seven billion, eight hundred fifty million, four hundred fifty-three thousand, six hundred eighty-nine".