67434620369 has 2 divisors, whose sum is σ = 67434620370. Its totient is φ = 67434620368.

The previous prime is 67434620339. The next prime is 67434620377. The reversal of 67434620369 is 96302643476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67156131025 + 278489344 = 259145^2 + 16688^2 .

It is a cyclic number.

It is not a de Polignac number, because 67434620369 - 2¹² = 67434616273 is a prime.

It is a super-2 number, since 2×67434620369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67434620339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33717310184 + 33717310185.

It is an arithmetic number, because the mean of its divisors is an integer number (33717310185).

Almost surely, 2^67434620369 is an apocalyptic number.

It is an amenable number.

67434620369 is a deficient number, since it is larger than the sum of its proper divisors (1).

67434620369 is an equidigital number, since it uses as much as digits as its factorization.

67434620369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3919104, while the sum is 50.

The spelling of 67434620369 in words is "sixty-seven billion, four hundred thirty-four million, six hundred twenty thousand, three hundred sixty-nine".