1103111354550 has 48 divisors (see below), whose sum is σ = 2739984286032. Its totient is φ = 293704089600.

The previous prime is 1103111354509. The next prime is 1103111354563. The reversal of 1103111354550 is 554531113011.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5640259 + ... + 5832558.

It is an arithmetic number, because the mean of its divisors is an integer number (57083005959).

Almost surely, 2^{1103111354550} is an apocalyptic number.

1103111354550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1103111354550 is an abundant number, since it is smaller than the sum of its proper divisors (1636872931482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1103111354550 is a wasteful number, since it uses less digits than its factorization.

1103111354550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11473473 (or 11473468 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

Adding to 1103111354550 its reverse (554531113011), we get a palindrome (1657642467561).

The spelling of 1103111354550 in words is "one trillion, one hundred three billion, one hundred eleven million, three hundred fifty-four thousand, five hundred fifty".