67423648889 has 2 divisors, whose sum is σ = 67423648890. Its totient is φ = 67423648888.

The previous prime is 67423648849. The next prime is 67423648987. The reversal of 67423648889 is 98884632476.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60667630864 + 6756018025 = 246308^2 + 82195^2 .

It is a cyclic number.

It is not a de Polignac number, because 67423648889 - 2²⁰ = 67422600313 is a prime.

It is a super-3 number, since 3×67423648889³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (67423648849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33711824444 + 33711824445.

It is an arithmetic number, because the mean of its divisors is an integer number (33711824445).

Almost surely, 2^67423648889 is an apocalyptic number.

It is an amenable number.

67423648889 is a deficient number, since it is larger than the sum of its proper divisors (1).

67423648889 is an equidigital number, since it uses as much as digits as its factorization.

67423648889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 111476736, while the sum is 65.

The spelling of 67423648889 in words is "sixty-seven billion, four hundred twenty-three million, six hundred forty-eight thousand, eight hundred eighty-nine".