203245042545 has 48 divisors (see below), whose sum is σ = 368637414912. Its totient is φ = 103463619840.

The previous prime is 203245042513. The next prime is 203245042577. The reversal of 203245042545 is 545240542302.

203245042545 is a `hidden beast` number, since 2 + 0 + 3 + 24 + 50 + 42 + 545 = 666.

It is an interprime number because it is at equal distance from previous prime (203245042513) and next prime (203245042577).

It is not a de Polignac number, because 203245042545 - 2⁵ = 203245042513 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 896079 + ... + 1099748.

It is an arithmetic number, because the mean of its divisors is an integer number (7679946144).

Almost surely, 2^203245042545 is an apocalyptic number.

It is an amenable number.

203245042545 is a deficient number, since it is larger than the sum of its proper divisors (165392372367).

203245042545 is a wasteful number, since it uses less digits than its factorization.

203245042545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995942 (or 1995939 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 36.

Adding to 203245042545 its reverse (545240542302), we get a palindrome (748485584847).

The spelling of 203245042545 in words is "two hundred three billion, two hundred forty-five million, forty-two thousand, five hundred forty-five".