66773344887711 has 384 divisors, whose sum is σ = 131519935872000. Its totient is φ = 33066278784000.

The previous prime is 66773344887709. The next prime is 66773344887719. The reversal of 66773344887711 is 11778844337766.

66773344887711 is a `hidden beast` number, since 6 + 6 + 7 + 7 + 33 + 448 + 87 + 71 + 1 = 666.

It is not a de Polignac number, because 66773344887711 - 2¹ = 66773344887709 is a prime.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 66773344887711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66773344887719) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 16581409680 + ... + 16581413706.

It is an arithmetic number, because the mean of its divisors is an integer number (342499833000).

Almost surely, 2^{66773344887711} is an apocalyptic number.

66773344887711 is a deficient number, since it is larger than the sum of its proper divisors (64746590984289).

66773344887711 is a wasteful number, since it uses less digits than its factorization.

66773344887711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4580 (or 4567 counting only the distinct ones).

The product of its digits is 796594176, while the sum is 72.

Subtracting from 66773344887711 its reverse (11778844337766), we obtain a palindrome (54994500549945).

The spelling of 66773344887711 in words is "sixty-six trillion, seven hundred seventy-three billion, three hundred forty-four million, eight hundred eighty-seven thousand, seven hundred eleven".