203553140245 has 16 divisors (see below), whose sum is σ = 300632330880. Its totient is φ = 128842426944.

The previous prime is 203553140233. The next prime is 203553140281. The reversal of 203553140245 is 542041355302.

It is not a de Polignac number, because 203553140245 - 2²⁵ = 203519585813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203553140245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223684315 + ... + 223685224.

It is an arithmetic number, because the mean of its divisors is an integer number (18789520680).

Almost surely, 2^203553140245 is an apocalyptic number.

It is an amenable number.

203553140245 is a deficient number, since it is larger than the sum of its proper divisors (97079190635).

203553140245 is a wasteful number, since it uses less digits than its factorization.

203553140245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447369564.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 203553140245 its reverse (542041355302), we get a palindrome (745594495547).

The spelling of 203553140245 in words is "two hundred three billion, five hundred fifty-three million, one hundred forty thousand, two hundred forty-five".