1103436043520 has 144 divisors (see below), whose sum is σ = 2836889470800. Its totient is φ = 409720061952.

The previous prime is 1103436043513. The next prime is 1103436043543. The reversal of 1103436043520 is 253406343011.

It can be written as a sum of positive squares in 8 ways, for example, as 56628769024 + 1046807274496 = 237968^2 + 1023136^2 .

It is a super-2 number, since 2×1103436043520² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1241156 + ... + 1935804.

It is an arithmetic number, because the mean of its divisors is an integer number (19700621325).

Almost surely, 2^{1103436043520} is an apocalyptic number.

1103436043520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1103436043520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1418444735400).

1103436043520 is an abundant number, since it is smaller than the sum of its proper divisors (1733453427280).

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

1103436043520 is an equidigital number, since it uses as much as digits as its factorization.

1103436043520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694760 (or 694746 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 1103436043520 in words is "one trillion, one hundred three billion, four hundred thirty-six million, forty-three thousand, five hundred twenty".