67345678357 has 2 divisors, whose sum is σ = 67345678358. Its totient is φ = 67345678356.

The previous prime is 67345678343. The next prime is 67345678403. The reversal of 67345678357 is 75387654376.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63470740356 + 3874938001 = 251934^2 + 62249^2 .

It is a cyclic number.

It is not a de Polignac number, because 67345678357 - 2²³ = 67337289749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67345678295 and 67345678304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67345678327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33672839178 + 33672839179.

It is an arithmetic number, because the mean of its divisors is an integer number (33672839179).

Almost surely, 2^67345678357 is an apocalyptic number.

It is an amenable number.

67345678357 is a deficient number, since it is larger than the sum of its proper divisors (1).

67345678357 is an equidigital number, since it uses as much as digits as its factorization.

67345678357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88905600, while the sum is 61.

The spelling of 67345678357 in words is "sixty-seven billion, three hundred forty-five million, six hundred seventy-eight thousand, three hundred fifty-seven".