1103042543545 has 16 divisors (see below), whose sum is σ = 1332176275728. Its totient is φ = 876751349760.

The previous prime is 1103042543531. The next prime is 1103042543549. The reversal of 1103042543545 is 5453452403011.

It can be written as a sum of positive squares in 8 ways, for example, as 61591104 + 1102980952441 = 7848^2 + 1050229^2 .

It is not a de Polignac number, because 1103042543545 - 2²⁵ = 1103008989113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103042543549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13335957 + ... + 13418413.

It is an arithmetic number, because the mean of its divisors is an integer number (83261017233).

Almost surely, 2^{1103042543545} is an apocalyptic number.

It is an amenable number.

1103042543545 is a deficient number, since it is larger than the sum of its proper divisors (229133732183).

1103042543545 is a wasteful number, since it uses less digits than its factorization.

1103042543545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99660.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 1103042543545 its reverse (5453452403011), we get a palindrome (6556494946556).

The spelling of 1103042543545 in words is "one trillion, one hundred three billion, forty-two million, five hundred forty-three thousand, five hundred forty-five".