1253123803603 has 16 divisors (see below), whose sum is σ = 1474205987520. Its totient is φ = 1042975604736.

The previous prime is 1253123803601. The next prime is 1253123803667. The reversal of 1253123803603 is 3063083213521.

It is a cyclic number.

It is not a de Polignac number, because 1253123803603 - 2¹ = 1253123803601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1253123803601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17374798 + ... + 17446771.

It is an arithmetic number, because the mean of its divisors is an integer number (92137874220).

Almost surely, 2^{1253123803603} is an apocalyptic number.

1253123803603 is a deficient number, since it is larger than the sum of its proper divisors (221082183917).

1253123803603 is an equidigital number, since it uses as much as digits as its factorization.

1253123803603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34821726.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 1253123803603 in words is "one trillion, two hundred fifty-three billion, one hundred twenty-three million, eight hundred three thousand, six hundred three".