67974467551 has 2 divisors, whose sum is σ = 67974467552. Its totient is φ = 67974467550.

The previous prime is 67974467501. The next prime is 67974467573. The reversal of 67974467551 is 15576447976.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67974467551 - 2⁹ = 67974467039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67974467551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67974467501) 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, 33987233775 + 33987233776.

It is an arithmetic number, because the mean of its divisors is an integer number (33987233776).

Almost surely, 2^67974467551 is an apocalyptic number.

67974467551 is a deficient number, since it is larger than the sum of its proper divisors (1).

67974467551 is an equidigital number, since it uses as much as digits as its factorization.

67974467551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44452800, while the sum is 61.

The spelling of 67974467551 in words is "sixty-seven billion, nine hundred seventy-four million, four hundred sixty-seven thousand, five hundred fifty-one".