203145051015 has 12 divisors (see below), whose sum is σ = 352118088504. Its totient is φ = 108344027184.

The previous prime is 203145051001. The next prime is 203145051017. The reversal of 203145051015 is 510150541302.

203145051015 is a `hidden beast` number, since 2 + 0 + 3 + 145 + 0 + 510 + 1 + 5 = 666.

It is not a de Polignac number, because 203145051015 - 2⁶ = 203145050951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203145051015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203145051017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2257167189 + ... + 2257167278.

It is an arithmetic number, because the mean of its divisors is an integer number (29343174042).

Almost surely, 2^203145051015 is an apocalyptic number.

203145051015 is a deficient number, since it is larger than the sum of its proper divisors (148973037489).

203145051015 is a wasteful number, since it uses less digits than its factorization.

203145051015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4514334478 (or 4514334475 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 203145051015 its reverse (510150541302), we get a palindrome (713295592317).

The spelling of 203145051015 in words is "two hundred three billion, one hundred forty-five million, fifty-one thousand, fifteen".