67918604879 has 2 divisors, whose sum is σ = 67918604880. Its totient is φ = 67918604878.

The previous prime is 67918604863. The next prime is 67918604951. The reversal of 67918604879 is 97840681976.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67918604879 - 2⁴ = 67918604863 is a prime.

It is a super-2 number, since 2×67918604879² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67918601879) 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, 33959302439 + 33959302440.

It is an arithmetic number, because the mean of its divisors is an integer number (33959302440).

Almost surely, 2^67918604879 is an apocalyptic number.

67918604879 is a deficient number, since it is larger than the sum of its proper divisors (1).

67918604879 is an equidigital number, since it uses as much as digits as its factorization.

67918604879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36578304, while the sum is 65.

The spelling of 67918604879 in words is "sixty-seven billion, nine hundred eighteen million, six hundred four thousand, eight hundred seventy-nine".