100503420520143 has 4 divisors (see below), whose sum is σ = 134004560693528. Its totient is φ = 67002280346760.

The previous prime is 100503420520093. The next prime is 100503420520163. The reversal of 100503420520143 is 341025024305001.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 100503420520143 - 2²¹ = 100503418422991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100503420520143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100503420520163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16750570086688 + ... + 16750570086693.

It is an arithmetic number, because the mean of its divisors is an integer number (33501140173382).

Almost surely, 2^{100503420520143} is an apocalyptic number.

100503420520143 is a deficient number, since it is larger than the sum of its proper divisors (33501140173385).

100503420520143 is an equidigital number, since it uses as much as digits as its factorization.

100503420520143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33501140173384.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 100503420520143 its reverse (341025024305001), we get a palindrome (441528444825144).

The spelling of 100503420520143 in words is "one hundred trillion, five hundred three billion, four hundred twenty million, five hundred twenty thousand, one hundred forty-three".