67253565979 has 2 divisors, whose sum is σ = 67253565980. Its totient is φ = 67253565978.

The previous prime is 67253565961. The next prime is 67253566019. The reversal of 67253565979 is 97956535276.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67253565979 - 2⁵ = 67253565947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67253565979.

It is not a weakly prime, because it can be changed into another prime (67253565179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33626782989 + 33626782990.

It is an arithmetic number, because the mean of its divisors is an integer number (33626782990).

Almost surely, 2^67253565979 is an apocalyptic number.

67253565979 is a deficient number, since it is larger than the sum of its proper divisors (1).

67253565979 is an equidigital number, since it uses as much as digits as its factorization.

67253565979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107163000, while the sum is 64.

The spelling of 67253565979 in words is "sixty-seven billion, two hundred fifty-three million, five hundred sixty-five thousand, nine hundred seventy-nine".