1403665500673 has 2 divisors, whose sum is σ = 1403665500674. Its totient is φ = 1403665500672.

The previous prime is 1403665500623. The next prime is 1403665500707. The reversal of 1403665500673 is 3760055663041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 910253381184 + 493412119489 = 954072^2 + 702433^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1403665500673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1403665500613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701832750336 + 701832750337.

It is an arithmetic number, because the mean of its divisors is an integer number (701832750337).

Almost surely, 2^{1403665500673} is an apocalyptic number.

It is an amenable number.

1403665500673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1403665500673 is an equidigital number, since it uses as much as digits as its factorization.

1403665500673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 46.

The spelling of 1403665500673 in words is "one trillion, four hundred three billion, six hundred sixty-five million, five hundred thousand, six hundred seventy-three".