203645265053 has 8 divisors (see below), whose sum is σ = 205805219256. Its totient is φ = 201488128000.

The previous prime is 203645265001. The next prime is 203645265059. The reversal of 203645265053 is 350562546302.

203645265053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 170571478009 + 33073787044 = 413003^2 + 181862^2 .

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 203645265053 - 2¹⁶ = 203645199517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203645265053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203645265059) 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, 558788 + ... + 848253.

It is an arithmetic number, because the mean of its divisors is an integer number (25725652407).

Almost surely, 2^203645265053 is an apocalyptic number.

It is an amenable number.

203645265053 is a deficient number, since it is larger than the sum of its proper divisors (2159954203).

203645265053 is a wasteful number, since it uses less digits than its factorization.

203645265053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408575.

The product of its (nonzero) digits is 648000, while the sum is 41.

The spelling of 203645265053 in words is "two hundred three billion, six hundred forty-five million, two hundred sixty-five thousand, fifty-three".