100503420520145 has 8 divisors (see below), whose sum is σ = 120619588571880. Its totient is φ = 80392413784320.

The previous prime is 100503420520093. The next prime is 100503420520163. The reversal of 100503420520145 is 541025024305001.

It can be written as a sum of positive squares in 4 ways, for example, as 19987542972049 + 80515877548096 = 4470743^2 + 8973064^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100503420520145 - 2⁶ = 100503420520081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290286136 + ... + 1290364025.

It is an arithmetic number, because the mean of its divisors is an integer number (15077448571485).

Almost surely, 2^{100503420520145} is an apocalyptic number.

It is an amenable number.

100503420520145 is a deficient number, since it is larger than the sum of its proper divisors (20116168051735).

100503420520145 is an equidigital number, since it uses as much as digits as its factorization.

100503420520145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580657955.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 100503420520145 its reverse (541025024305001), we get a palindrome (641528444825146).

The spelling of 100503420520145 in words is "one hundred trillion, five hundred three billion, four hundred twenty million, five hundred twenty thousand, one hundred forty-five".