2663403231673 has 2 divisors, whose sum is σ = 2663403231674. Its totient is φ = 2663403231672.

The previous prime is 2663403231659. The next prime is 2663403231679. The reversal of 2663403231673 is 3761323043662.

2663403231673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2306549925289 + 356853306384 = 1518733^2 + 597372^2 .

It is a cyclic number.

It is not a de Polignac number, because 2663403231673 - 2²⁹ = 2662866360761 is a prime.

It is a super-2 number, since 2×2663403231673² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2663403231679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1331701615836 + 1331701615837.

It is an arithmetic number, because the mean of its divisors is an integer number (1331701615837).

Almost surely, 2^{2663403231673} is an apocalyptic number.

It is an amenable number.

2663403231673 is a deficient number, since it is larger than the sum of its proper divisors (1).

2663403231673 is an equidigital number, since it uses as much as digits as its factorization.

2663403231673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 46.

The spelling of 2663403231673 in words is "two trillion, six hundred sixty-three billion, four hundred three million, two hundred thirty-one thousand, six hundred seventy-three".