10100123050503 has 4 divisors (see below), whose sum is σ = 13466830734008. Its totient is φ = 6733415367000.

The previous prime is 10100123050487. The next prime is 10100123050517. The reversal of 10100123050503 is 30505032100101.

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

It is not a de Polignac number, because 10100123050503 - 2⁴ = 10100123050487 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 10100123050503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10100123050583) 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 3 ways as a sum of consecutive naturals, for example, 1683353841748 + ... + 1683353841753.

It is an arithmetic number, because the mean of its divisors is an integer number (3366707683502).

Almost surely, 2^{10100123050503} is an apocalyptic number.

10100123050503 is a deficient number, since it is larger than the sum of its proper divisors (3366707683505).

10100123050503 is an equidigital number, since it uses as much as digits as its factorization.

10100123050503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366707683504.

The product of its (nonzero) digits is 450, while the sum is 21.

Adding to 10100123050503 its reverse (30505032100101), we get a palindrome (40605155150604).

The spelling of 10100123050503 in words is "ten trillion, one hundred billion, one hundred twenty-three million, fifty thousand, five hundred three".