3640454466679 has 2 divisors, whose sum is σ = 3640454466680. Its totient is φ = 3640454466678.

The previous prime is 3640454466641. The next prime is 3640454466721. The reversal of 3640454466679 is 9766644540463.

It is a weak prime.

It is an emirp because it is prime and its reverse (9766644540463) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3640454466679 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3640454466679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3640454416679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1820227233339 + 1820227233340.

It is an arithmetic number, because the mean of its divisors is an integer number (1820227233340).

Almost surely, 2^{3640454466679} is an apocalyptic number.

3640454466679 is a deficient number, since it is larger than the sum of its proper divisors (1).

3640454466679 is an equidigital number, since it uses as much as digits as its factorization.

3640454466679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 313528320, while the sum is 64.

The spelling of 3640454466679 in words is "three trillion, six hundred forty billion, four hundred fifty-four million, four hundred sixty-six thousand, six hundred seventy-nine".