64641416627 has 2 divisors, whose sum is σ = 64641416628. Its totient is φ = 64641416626.

The previous prime is 64641416591. The next prime is 64641416669. The reversal of 64641416627 is 72661414646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64641416627 - 2⁶ = 64641416563 is a prime.

It is not a weakly prime, because it can be changed into another prime (64641410627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32320708313 + 32320708314.

It is an arithmetic number, because the mean of its divisors is an integer number (32320708314).

Almost surely, 2^64641416627 is an apocalyptic number.

64641416627 is a deficient number, since it is larger than the sum of its proper divisors (1).

64641416627 is an equidigital number, since it uses as much as digits as its factorization.

64641416627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 47.

The spelling of 64641416627 in words is "sixty-four billion, six hundred forty-one million, four hundred sixteen thousand, six hundred twenty-seven".