67711085629609 has 2 divisors, whose sum is σ = 67711085629610. Its totient is φ = 67711085629608.

The previous prime is 67711085629597. The next prime is 67711085629633. The reversal of 67711085629609 is 90692658011776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60571929143209 + 7139156486400 = 7782797^2 + 2671920^2 .

It is a cyclic number.

It is not a de Polignac number, because 67711085629609 - 2¹⁵ = 67711085596841 is a prime.

It is a super-2 number, since 2×67711085629609² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67711085629709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33855542814804 + 33855542814805.

It is an arithmetic number, because the mean of its divisors is an integer number (33855542814805).

Almost surely, 2^{67711085629609} is an apocalyptic number.

It is an amenable number.

67711085629609 is a deficient number, since it is larger than the sum of its proper divisors (1).

67711085629609 is an equidigital number, since it uses as much as digits as its factorization.

67711085629609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68584320, while the sum is 67.

The spelling of 67711085629609 in words is "sixty-seven trillion, seven hundred eleven billion, eighty-five million, six hundred twenty-nine thousand, six hundred nine".