66524251051019 has 2 divisors, whose sum is σ = 66524251051020. Its totient is φ = 66524251051018.

The previous prime is 66524251050949. The next prime is 66524251051043. The reversal of 66524251051019 is 91015015242566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66524251051019 - 2¹² = 66524251046923 is a prime.

It is a super-2 number, since 2×66524251051019² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (66524251051919) 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, 33262125525509 + 33262125525510.

It is an arithmetic number, because the mean of its divisors is an integer number (33262125525510).

Almost surely, 2^{66524251051019} is an apocalyptic number.

66524251051019 is a deficient number, since it is larger than the sum of its proper divisors (1).

66524251051019 is an equidigital number, since it uses as much as digits as its factorization.

66524251051019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 47.

The spelling of 66524251051019 in words is "sixty-six trillion, five hundred twenty-four billion, two hundred fifty-one million, fifty-one thousand, nineteen".