6624665863489 has 2 divisors, whose sum is σ = 6624665863490. Its totient is φ = 6624665863488.

The previous prime is 6624665863483. The next prime is 6624665863507. The reversal of 6624665863489 is 9843685664266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3357909651600 + 3266756211889 = 1832460^2 + 1807417^2 .

It is a cyclic number.

It is not a de Polignac number, because 6624665863489 - 2²³ = 6624657474881 is a prime.

It is not a weakly prime, because it can be changed into another prime (6624665863483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3312332931744 + 3312332931745.

It is an arithmetic number, because the mean of its divisors is an integer number (3312332931745).

Almost surely, 2^{6624665863489} is an apocalyptic number.

It is an amenable number.

6624665863489 is a deficient number, since it is larger than the sum of its proper divisors (1).

6624665863489 is an equidigital number, since it uses as much as digits as its factorization.

6624665863489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2149908480, while the sum is 73.

The spelling of 6624665863489 in words is "six trillion, six hundred twenty-four billion, six hundred sixty-five million, eight hundred sixty-three thousand, four hundred eighty-nine".