67195450349 has 2 divisors, whose sum is σ = 67195450350. Its totient is φ = 67195450348.

The previous prime is 67195450321. The next prime is 67195450379. The reversal of 67195450349 is 94305459176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64970441449 + 2225008900 = 254893^2 + 47170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67195450349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67195450349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67195450319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33597725174 + 33597725175.

It is an arithmetic number, because the mean of its divisors is an integer number (33597725175).

Almost surely, 2^67195450349 is an apocalyptic number.

It is an amenable number.

67195450349 is a deficient number, since it is larger than the sum of its proper divisors (1).

67195450349 is an equidigital number, since it uses as much as digits as its factorization.

67195450349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4082400, while the sum is 53.

The spelling of 67195450349 in words is "sixty-seven billion, one hundred ninety-five million, four hundred fifty thousand, three hundred forty-nine".