1105001005503 has 4 divisors (see below), whose sum is σ = 1473334674008. Its totient is φ = 736667337000.

The previous prime is 1105001005501. The next prime is 1105001005531. The reversal of 1105001005503 is 3055001005011.

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

It is not a de Polignac number, because 1105001005503 - 2¹ = 1105001005501 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 1105001005503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105001005501) 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, 184166834248 + ... + 184166834253.

It is an arithmetic number, because the mean of its divisors is an integer number (368333668502).

Almost surely, 2^{1105001005503} is an apocalyptic number.

1105001005503 is a deficient number, since it is larger than the sum of its proper divisors (368333668505).

1105001005503 is an equidigital number, since it uses as much as digits as its factorization.

1105001005503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368333668504.

The product of its (nonzero) digits is 375, while the sum is 21.

The spelling of 1105001005503 in words is "one trillion, one hundred five billion, one million, five thousand, five hundred three".