1373203203066 has 12 divisors (see below), whose sum is σ = 2975273606682. Its totient is φ = 457734401016.

The previous prime is 1373203203019. The next prime is 1373203203077. The reversal of 1373203203066 is 6603023023731.

1373203203066 is a `hidden beast` number, since 1 + 3 + 7 + 3 + 20 + 320 + 306 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1268954937441 + 104248265625 = 1126479^2 + 322875^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1373203203066.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38144533401 + ... + 38144533436.

Almost surely, 2^{1373203203066} is an apocalyptic number.

1373203203066 is an abundant number, since it is smaller than the sum of its proper divisors (1602070403616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1373203203066 is a wasteful number, since it uses less digits than its factorization.

1373203203066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76289066845 (or 76289066842 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 36.

Adding to 1373203203066 its reverse (6603023023731), we get a palindrome (7976226226797).

The spelling of 1373203203066 in words is "one trillion, three hundred seventy-three billion, two hundred three million, two hundred three thousand, sixty-six".