203109642453 has 8 divisors (see below), whose sum is σ = 271075530816. Its totient is φ = 135275091200.

The previous prime is 203109642433. The next prime is 203109642469. The reversal of 203109642453 is 354246901302.

203109642453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203109642453 - 2⁶ = 203109642389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203109642403) 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 7 ways as a sum of consecutive naturals, for example, 32830668 + ... + 32836853.

It is an arithmetic number, because the mean of its divisors is an integer number (33884441352).

Almost surely, 2^203109642453 is an apocalyptic number.

It is an amenable number.

203109642453 is a deficient number, since it is larger than the sum of its proper divisors (67965888363).

203109642453 is a wasteful number, since it uses less digits than its factorization.

203109642453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65668555.

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 203109642453 in words is "two hundred three billion, one hundred nine million, six hundred forty-two thousand, four hundred fifty-three".