2664544464493 has 2 divisors, whose sum is σ = 2664544464494. Its totient is φ = 2664544464492.

The previous prime is 2664544464467. The next prime is 2664544464529. The reversal of 2664544464493 is 3944644454662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2578022006884 + 86522457609 = 1605622^2 + 294147^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2664544464493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2664544464433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332272232246 + 1332272232247.

It is an arithmetic number, because the mean of its divisors is an integer number (1332272232247).

Almost surely, 2^{2664544464493} is an apocalyptic number.

It is an amenable number.

2664544464493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2664544464493 is an equidigital number, since it uses as much as digits as its factorization.

2664544464493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238878720, while the sum is 61.

The spelling of 2664544464493 in words is "two trillion, six hundred sixty-four billion, five hundred forty-four million, four hundred sixty-four thousand, four hundred ninety-three".