66405151763 has 2 divisors, whose sum is σ = 66405151764. Its totient is φ = 66405151762.

The previous prime is 66405151643. The next prime is 66405151777. The reversal of 66405151763 is 36715150466.

66405151763 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66405151763 - 2¹⁶ = 66405086227 is a prime.

It is not a weakly prime, because it can be changed into another prime (66405151793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33202575881 + 33202575882.

It is an arithmetic number, because the mean of its divisors is an integer number (33202575882).

Almost surely, 2^66405151763 is an apocalyptic number.

66405151763 is a deficient number, since it is larger than the sum of its proper divisors (1).

66405151763 is an equidigital number, since it uses as much as digits as its factorization.

66405151763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 66405151763 in words is "sixty-six billion, four hundred five million, one hundred fifty-one thousand, seven hundred sixty-three".