251145035103 has 64 divisors (see below), whose sum is σ = 366893660160. Its totient is φ = 152216064000.

The previous prime is 251145035093. The next prime is 251145035111. The reversal of 251145035103 is 301530541152.

It is not a de Polignac number, because 251145035103 - 2¹⁰ = 251145034079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251145035153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41805726 + ... + 41811732.

It is an arithmetic number, because the mean of its divisors is an integer number (5732713440).

Almost surely, 2^251145035103 is an apocalyptic number.

251145035103 is a deficient number, since it is larger than the sum of its proper divisors (115748625057).

251145035103 is a wasteful number, since it uses less digits than its factorization.

251145035103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6328.

The product of its (nonzero) digits is 9000, while the sum is 30.

Adding to 251145035103 its reverse (301530541152), we get a palindrome (552675576255).

The spelling of 251145035103 in words is "two hundred fifty-one billion, one hundred forty-five million, thirty-five thousand, one hundred three".