67356452321 has 2 divisors, whose sum is σ = 67356452322. Its totient is φ = 67356452320.

The previous prime is 67356452311. The next prime is 67356452333. The reversal of 67356452321 is 12325465376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35338360225 + 32018092096 = 187985^2 + 178936^2 .

It is a cyclic number.

It is not a de Polignac number, because 67356452321 - 2⁶ = 67356452257 is a prime.

It is a super-2 number, since 2×67356452321² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67356452311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33678226160 + 33678226161.

It is an arithmetic number, because the mean of its divisors is an integer number (33678226161).

Almost surely, 2^67356452321 is an apocalyptic number.

It is an amenable number.

67356452321 is a deficient number, since it is larger than the sum of its proper divisors (1).

67356452321 is an equidigital number, since it uses as much as digits as its factorization.

67356452321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 44.

The spelling of 67356452321 in words is "sixty-seven billion, three hundred fifty-six million, four hundred fifty-two thousand, three hundred twenty-one".