1545323988673 has 2 divisors, whose sum is σ = 1545323988674. Its totient is φ = 1545323988672.

The previous prime is 1545323988667. The next prime is 1545323988679. The reversal of 1545323988673 is 3768893235451.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1545323988667) and next prime (1545323988679).

It can be written as a sum of positive squares in only one way, i.e., 1375816394304 + 169507594369 = 1172952^2 + 411713^2 .

It is an emirp because it is prime and its reverse (3768893235451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1545323988673 - 2²⁹ = 1544787117761 is a prime.

It is not a weakly prime, because it can be changed into another prime (1545323988679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 772661994336 + 772661994337.

It is an arithmetic number, because the mean of its divisors is an integer number (772661994337).

Almost surely, 2^{1545323988673} is an apocalyptic number.

It is an amenable number.

1545323988673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1545323988673 is an equidigital number, since it uses as much as digits as its factorization.

1545323988673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 130636800, while the sum is 64.

The spelling of 1545323988673 in words is "one trillion, five hundred forty-five billion, three hundred twenty-three million, nine hundred eighty-eight thousand, six hundred seventy-three".