67238891767 has 2 divisors, whose sum is σ = 67238891768. Its totient is φ = 67238891766.

The previous prime is 67238891711. The next prime is 67238891789. The reversal of 67238891767 is 76719883276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67238891767 - 2⁷ = 67238891639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67238891699 and 67238891708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67238895767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33619445883 + 33619445884.

It is an arithmetic number, because the mean of its divisors is an integer number (33619445884).

Almost surely, 2^67238891767 is an apocalyptic number.

67238891767 is a deficient number, since it is larger than the sum of its proper divisors (1).

67238891767 is an equidigital number, since it uses as much as digits as its factorization.

67238891767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42674688, while the sum is 64.

The spelling of 67238891767 in words is "sixty-seven billion, two hundred thirty-eight million, eight hundred ninety-one thousand, seven hundred sixty-seven".