1101544040203 has 4 divisors (see below), whose sum is σ = 1105732420848. Its totient is φ = 1097355659560.

The previous prime is 1101544040189. The next prime is 1101544040209. The reversal of 1101544040203 is 3020404451011.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101544040203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101544040209) 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, 2094189928 + ... + 2094190453.

It is an arithmetic number, because the mean of its divisors is an integer number (276433105212).

Almost surely, 2^{1101544040203} is an apocalyptic number.

1101544040203 is a deficient number, since it is larger than the sum of its proper divisors (4188380645).

1101544040203 is an equidigital number, since it uses as much as digits as its factorization.

1101544040203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4188380644.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 1101544040203 its reverse (3020404451011), we get a palindrome (4121948491214).

The spelling of 1101544040203 in words is "one trillion, one hundred one billion, five hundred forty-four million, forty thousand, two hundred three".