67871211061 has 2 divisors, whose sum is σ = 67871211062. Its totient is φ = 67871211060.

The previous prime is 67871211029. The next prime is 67871211071. The reversal of 67871211061 is 16011217876.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44824934961 + 23046276100 = 211719^2 + 151810^2 .

It is a cyclic number.

It is not a de Polignac number, because 67871211061 - 2⁵ = 67871211029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67871211071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33935605530 + 33935605531.

It is an arithmetic number, because the mean of its divisors is an integer number (33935605531).

Almost surely, 2^67871211061 is an apocalyptic number.

It is an amenable number.

67871211061 is a deficient number, since it is larger than the sum of its proper divisors (1).

67871211061 is an equidigital number, since it uses as much as digits as its factorization.

67871211061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 40.

The spelling of 67871211061 in words is "sixty-seven billion, eight hundred seventy-one million, two hundred eleven thousand, sixty-one".