67045205723 has 2 divisors, whose sum is σ = 67045205724. Its totient is φ = 67045205722.

The previous prime is 67045205687. The next prime is 67045205737. The reversal of 67045205723 is 32750254076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67045205723 - 2¹² = 67045201627 is a prime.

It is a super-2 number, since 2×67045205723² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67045205743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33522602861 + 33522602862.

It is an arithmetic number, because the mean of its divisors is an integer number (33522602862).

Almost surely, 2^67045205723 is an apocalyptic number.

67045205723 is a deficient number, since it is larger than the sum of its proper divisors (1).

67045205723 is an equidigital number, since it uses as much as digits as its factorization.

67045205723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 41.

Adding to 67045205723 its reverse (32750254076), we get a palindrome (99795459799).

The spelling of 67045205723 in words is "sixty-seven billion, forty-five million, two hundred five thousand, seven hundred twenty-three".