66038468711 has 2 divisors, whose sum is σ = 66038468712. Its totient is φ = 66038468710.

The previous prime is 66038468693. The next prime is 66038468731. The reversal of 66038468711 is 11786483066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66038468711 - 2¹⁸ = 66038206567 is a prime.

It is a super-2 number, since 2×66038468711² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66038468711.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66038468731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33019234355 + 33019234356.

It is an arithmetic number, because the mean of its divisors is an integer number (33019234356).

Almost surely, 2^66038468711 is an apocalyptic number.

66038468711 is a deficient number, since it is larger than the sum of its proper divisors (1).

66038468711 is an equidigital number, since it uses as much as digits as its factorization.

66038468711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 66038468711 in words is "sixty-six billion, thirty-eight million, four hundred sixty-eight thousand, seven hundred eleven".