66551452567 has 2 divisors, whose sum is σ = 66551452568. Its totient is φ = 66551452566.

The previous prime is 66551452549. The next prime is 66551452571. The reversal of 66551452567 is 76525415566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66551452567 - 2¹⁵ = 66551419799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66551452367) 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, 33275726283 + 33275726284.

It is an arithmetic number, because the mean of its divisors is an integer number (33275726284).

Almost surely, 2^66551452567 is an apocalyptic number.

66551452567 is a deficient number, since it is larger than the sum of its proper divisors (1).

66551452567 is an equidigital number, since it uses as much as digits as its factorization.

66551452567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560000, while the sum is 52.

The spelling of 66551452567 in words is "sixty-six billion, five hundred fifty-one million, four hundred fifty-two thousand, five hundred sixty-seven".