67028509863929 has 2 divisors, whose sum is σ = 67028509863930. Its totient is φ = 67028509863928.

The previous prime is 67028509863883. The next prime is 67028509863937. The reversal of 67028509863929 is 92936890582076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42375894644329 + 24652615219600 = 6509677^2 + 4965140^2 .

It is a cyclic number.

It is not a de Polignac number, because 67028509863929 - 2²⁰ = 67028508815353 is a prime.

It is a super-2 number, since 2×67028509863929² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67028509863529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33514254931964 + 33514254931965.

It is an arithmetic number, because the mean of its divisors is an integer number (33514254931965).

Almost surely, 2^{67028509863929} is an apocalyptic number.

It is an amenable number.

67028509863929 is a deficient number, since it is larger than the sum of its proper divisors (1).

67028509863929 is an equidigital number, since it uses as much as digits as its factorization.

67028509863929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 705438720, while the sum is 74.

The spelling of 67028509863929 in words is "sixty-seven trillion, twenty-eight billion, five hundred nine million, eight hundred sixty-three thousand, nine hundred twenty-nine".