66640153603 has 2 divisors, whose sum is σ = 66640153604. Its totient is φ = 66640153602.

The previous prime is 66640153553. The next prime is 66640153627. The reversal of 66640153603 is 30635104666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66640153603 - 2²⁹ = 66103282691 is a prime.

It is not a weakly prime, because it can be changed into another prime (66640153673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33320076801 + 33320076802.

It is an arithmetic number, because the mean of its divisors is an integer number (33320076802).

Almost surely, 2^66640153603 is an apocalyptic number.

66640153603 is a deficient number, since it is larger than the sum of its proper divisors (1).

66640153603 is an equidigital number, since it uses as much as digits as its factorization.

66640153603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 40.

The spelling of 66640153603 in words is "sixty-six billion, six hundred forty million, one hundred fifty-three thousand, six hundred three".