66928076741 has 2 divisors, whose sum is σ = 66928076742. Its totient is φ = 66928076740.

The previous prime is 66928076723. The next prime is 66928076819. The reversal of 66928076741 is 14767082966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51613024225 + 15315052516 = 227185^2 + 123754^2 .

It is a cyclic number.

It is not a de Polignac number, because 66928076741 - 2¹⁴ = 66928060357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66928076701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33464038370 + 33464038371.

It is an arithmetic number, because the mean of its divisors is an integer number (33464038371).

Almost surely, 2^66928076741 is an apocalyptic number.

It is an amenable number.

66928076741 is a deficient number, since it is larger than the sum of its proper divisors (1).

66928076741 is an equidigital number, since it uses as much as digits as its factorization.

66928076741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 66928076741 in words is "sixty-six billion, nine hundred twenty-eight million, seventy-six thousand, seven hundred forty-one".