2105500541503 has 8 divisors (see below), whose sum is σ = 2114967241728. Its totient is φ = 2096044909944.

The previous prime is 2105500541489. The next prime is 2105500541533. The reversal of 2105500541503 is 3051450055012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105500541503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105500541533) 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 7 ways as a sum of consecutive naturals, for example, 2385751 + ... + 3146872.

It is an arithmetic number, because the mean of its divisors is an integer number (264370905216).

Almost surely, 2^{2105500541503} is an apocalyptic number.

2105500541503 is a deficient number, since it is larger than the sum of its proper divisors (9466700225).

2105500541503 is a wasteful number, since it uses less digits than its factorization.

2105500541503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5534333.

The product of its (nonzero) digits is 15000, while the sum is 31.

Adding to 2105500541503 its reverse (3051450055012), we get a palindrome (5156950596515).

The spelling of 2105500541503 in words is "two trillion, one hundred five billion, five hundred million, five hundred forty-one thousand, five hundred three".