66241256479 has 2 divisors, whose sum is σ = 66241256480. Its totient is φ = 66241256478.

The previous prime is 66241256353. The next prime is 66241256503. The reversal of 66241256479 is 97465214266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66241256479 - 2³⁵ = 31881518111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66245256479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33120628239 + 33120628240.

It is an arithmetic number, because the mean of its divisors is an integer number (33120628240).

Almost surely, 2^66241256479 is an apocalyptic number.

66241256479 is a deficient number, since it is larger than the sum of its proper divisors (1).

66241256479 is an equidigital number, since it uses as much as digits as its factorization.

66241256479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 52.

The spelling of 66241256479 in words is "sixty-six billion, two hundred forty-one million, two hundred fifty-six thousand, four hundred seventy-nine".