66640153627 has 2 divisors, whose sum is σ = 66640153628. Its totient is φ = 66640153626.

The previous prime is 66640153603. The next prime is 66640153639. The reversal of 66640153627 is 72635104666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66640153627 - 2⁷ = 66640153499 is a prime.

It is a super-2 number, since 2×66640153627² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (66640153667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33320076813 + 33320076814.

It is an arithmetic number, because the mean of its divisors is an integer number (33320076814).

Almost surely, 2^66640153627 is an apocalyptic number.

66640153627 is a deficient number, since it is larger than the sum of its proper divisors (1).

66640153627 is an equidigital number, since it uses as much as digits as its factorization.

66640153627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 46.

The spelling of 66640153627 in words is "sixty-six billion, six hundred forty million, one hundred fifty-three thousand, six hundred twenty-seven".