100450043503 has 4 divisors (see below), whose sum is σ = 100453944960. Its totient is φ = 100446142048.

The previous prime is 100450043497. The next prime is 100450043557. The reversal of 100450043503 is 305340054001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305340054001 = 40231 ⋅7589671.

It is a cyclic number.

It is not a de Polignac number, because 100450043503 - 2²⁹ = 99913172591 is a prime.

It is a super-2 number, since 2×100450043503² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100450043303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1911850 + ... + 1963687.

It is an arithmetic number, because the mean of its divisors is an integer number (25113486240).

Almost surely, 2^100450043503 is an apocalyptic number.

100450043503 is a deficient number, since it is larger than the sum of its proper divisors (3901457).

100450043503 is an equidigital number, since it uses as much as digits as its factorization.

100450043503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901456.

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 100450043503 its reverse (305340054001), we get a palindrome (405790097504).

The spelling of 100450043503 in words is "one hundred billion, four hundred fifty million, forty-three thousand, five hundred three".