1155243404003 has 24 divisors (see below), whose sum is σ = 1257748784208. Its totient is φ = 1060593186432.

The previous prime is 1155243403997. The next prime is 1155243404017. The reversal of 1155243404003 is 3004043425511.

It is not a de Polignac number, because 1155243404003 - 2⁴ = 1155243403987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155243404503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23708501 + ... + 23757177.

It is an arithmetic number, because the mean of its divisors is an integer number (52406199342).

Almost surely, 2^{1155243404003} is an apocalyptic number.

1155243404003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1155243404003 is a deficient number, since it is larger than the sum of its proper divisors (102505380205).

1155243404003 is a wasteful number, since it uses less digits than its factorization.

1155243404003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49463 (or 49450 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 1155243404003 its reverse (3004043425511), we get a palindrome (4159286829514).

The spelling of 1155243404003 in words is "one trillion, one hundred fifty-five billion, two hundred forty-three million, four hundred four thousand, three".