66404873011 has 2 divisors, whose sum is σ = 66404873012. Its totient is φ = 66404873010.

The previous prime is 66404872999. The next prime is 66404873053. The reversal of 66404873011 is 11037840466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66404873011 - 2⁷ = 66404872883 is a prime.

It is a super-2 number, since 2×66404873011² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (66404373011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33202436505 + 33202436506.

It is an arithmetic number, because the mean of its divisors is an integer number (33202436506).

Almost surely, 2^66404873011 is an apocalyptic number.

66404873011 is a deficient number, since it is larger than the sum of its proper divisors (1).

66404873011 is an equidigital number, since it uses as much as digits as its factorization.

66404873011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 66404873011 in words is "sixty-six billion, four hundred four million, eight hundred seventy-three thousand, eleven".