66310250243 has 2 divisors, whose sum is σ = 66310250244. Its totient is φ = 66310250242.

The previous prime is 66310250221. The next prime is 66310250267. The reversal of 66310250243 is 34205201366.

66310250243 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 66310250243 - 2¹⁴ = 66310233859 is a prime.

It is not a weakly prime, because it can be changed into another prime (66310250203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33155125121 + 33155125122.

It is an arithmetic number, because the mean of its divisors is an integer number (33155125122).

Almost surely, 2^66310250243 is an apocalyptic number.

66310250243 is a deficient number, since it is larger than the sum of its proper divisors (1).

66310250243 is an equidigital number, since it uses as much as digits as its factorization.

66310250243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 66310250243 in words is "sixty-six billion, three hundred ten million, two hundred fifty thousand, two hundred forty-three".