1366625432673 has 12 divisors (see below), whose sum is σ = 1978937248548. Its totient is φ = 908811590400.

The previous prime is 1366625432671. The next prime is 1366625432699. The reversal of 1366625432673 is 3762345266631.

It can be written as a sum of positive squares in 2 ways, for example, as 1055515828689 + 311109603984 = 1027383^2 + 557772^2 .

It is not a de Polignac number, because 1366625432673 - 2¹ = 1366625432671 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1366625432671) 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 in 11 ways as a sum of consecutive naturals, for example, 189332140 + ... + 189339357.

It is an arithmetic number, because the mean of its divisors is an integer number (164911437379).

Almost surely, 2^{1366625432673} is an apocalyptic number.

It is an amenable number.

1366625432673 is a deficient number, since it is larger than the sum of its proper divisors (612311815875).

1366625432673 is a wasteful number, since it uses less digits than its factorization.

1366625432673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378671904 (or 378671901 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 54.

The spelling of 1366625432673 in words is "one trillion, three hundred sixty-six billion, six hundred twenty-five million, four hundred thirty-two thousand, six hundred seventy-three".