203245115136 has 144 divisors (see below), whose sum is σ = 654569121024. Its totient is φ = 54654124032.

The previous prime is 203245115123. The next prime is 203245115149. The reversal of 203245115136 is 631511542302.

It is an interprime number because it is at equal distance from previous prime (203245115123) and next prime (203245115149).

It is a junction number, because it is equal to n+sod(n) for n = 203245115097 and 203245115106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1020550 + ... + 1203333.

It is an arithmetic number, because the mean of its divisors is an integer number (4545618896).

Almost surely, 2^203245115136 is an apocalyptic number.

It is an amenable number.

203245115136 is an abundant number, since it is smaller than the sum of its proper divisors (451324005888).

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

203245115136 is a wasteful number, since it uses less digits than its factorization.

203245115136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223926 (or 2223912 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 203245115136 its reverse (631511542302), we get a palindrome (834756657438).

The spelling of 203245115136 in words is "two hundred three billion, two hundred forty-five million, one hundred fifteen thousand, one hundred thirty-six".