66042224387 has 2 divisors, whose sum is σ = 66042224388. Its totient is φ = 66042224386.

The previous prime is 66042224383. The next prime is 66042224411. The reversal of 66042224387 is 78342224066.

66042224387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66042224387 - 2² = 66042224383 is a prime.

It is not a weakly prime, because it can be changed into another prime (66042224383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33021112193 + 33021112194.

It is an arithmetic number, because the mean of its divisors is an integer number (33021112194).

Almost surely, 2^66042224387 is an apocalyptic number.

66042224387 is a deficient number, since it is larger than the sum of its proper divisors (1).

66042224387 is an equidigital number, since it uses as much as digits as its factorization.

66042224387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 44.

The spelling of 66042224387 in words is "sixty-six billion, forty-two million, two hundred twenty-four thousand, three hundred eighty-seven".