5644945989479 has 2 divisors, whose sum is σ = 5644945989480. Its totient is φ = 5644945989478.

The previous prime is 5644945989467. The next prime is 5644945989503. The reversal of 5644945989479 is 9749895494465.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5644945989479 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5644945989397 and 5644945989406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5644945989379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822472994739 + 2822472994740.

It is an arithmetic number, because the mean of its divisors is an integer number (2822472994740).

Almost surely, 2^{5644945989479} is an apocalyptic number.

5644945989479 is a deficient number, since it is larger than the sum of its proper divisors (1).

5644945989479 is an equidigital number, since it uses as much as digits as its factorization.

5644945989479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14108774400, while the sum is 83.

The spelling of 5644945989479 in words is "five trillion, six hundred forty-four billion, nine hundred forty-five million, nine hundred eighty-nine thousand, four hundred seventy-nine".