67343235653 has 2 divisors, whose sum is σ = 67343235654. Its totient is φ = 67343235652.

The previous prime is 67343235587. The next prime is 67343235677. The reversal of 67343235653 is 35653234376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63803223649 + 3540012004 = 252593^2 + 59498^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67343235653 is a prime.

It is a super-2 number, since 2×67343235653² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 67343235598 and 67343235607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67343235353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33671617826 + 33671617827.

It is an arithmetic number, because the mean of its divisors is an integer number (33671617827).

Almost surely, 2^67343235653 is an apocalyptic number.

It is an amenable number.

67343235653 is a deficient number, since it is larger than the sum of its proper divisors (1).

67343235653 is an equidigital number, since it uses as much as digits as its factorization.

67343235653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4082400, while the sum is 47.

The spelling of 67343235653 in words is "sixty-seven billion, three hundred forty-three million, two hundred thirty-five thousand, six hundred fifty-three".