67782673771 has 2 divisors, whose sum is σ = 67782673772. Its totient is φ = 67782673770.

The previous prime is 67782673759. The next prime is 67782673801. The reversal of 67782673771 is 17737628776.

67782673771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67782673771 - 2⁷ = 67782673643 is a prime.

It is a super-2 number, since 2×67782673771² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67782673571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33891336885 + 33891336886.

It is an arithmetic number, because the mean of its divisors is an integer number (33891336886).

Almost surely, 2^67782673771 is an apocalyptic number.

67782673771 is a deficient number, since it is larger than the sum of its proper divisors (1).

67782673771 is an equidigital number, since it uses as much as digits as its factorization.

67782673771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29042496, while the sum is 61.

The spelling of 67782673771 in words is "sixty-seven billion, seven hundred eighty-two million, six hundred seventy-three thousand, seven hundred seventy-one".