66234848777 has 2 divisors, whose sum is σ = 66234848778. Its totient is φ = 66234848776.

The previous prime is 66234848761. The next prime is 66234848791. The reversal of 66234848777 is 77784843266.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56239648201 + 9995200576 = 237149^2 + 99976^2 .

It is a cyclic number.

It is not a de Polignac number, because 66234848777 - 2⁴ = 66234848761 is a prime.

It is not a weakly prime, because it can be changed into another prime (66234848077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33117424388 + 33117424389.

It is an arithmetic number, because the mean of its divisors is an integer number (33117424389).

Almost surely, 2^66234848777 is an apocalyptic number.

It is an amenable number.

66234848777 is a deficient number, since it is larger than the sum of its proper divisors (1).

66234848777 is an equidigital number, since it uses as much as digits as its factorization.

66234848777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75866112, while the sum is 62.

The spelling of 66234848777 in words is "sixty-six billion, two hundred thirty-four million, eight hundred forty-eight thousand, seven hundred seventy-seven".