13603503285840 has 480 divisors, whose sum is σ = 47532551721984. Its totient is φ = 3196024750080.

The previous prime is 13603503285821. The next prime is 13603503285881. The reversal of 13603503285840 is 4858230530631.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 13603503285840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 515407684 + ... + 515434076.

Almost surely, 2^{13603503285840} is an apocalyptic number.

13603503285840 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 13603503285840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23766275860992).

13603503285840 is an abundant number, since it is smaller than the sum of its proper divisors (33929048436144).

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

13603503285840 is a wasteful number, since it uses less digits than its factorization.

13603503285840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26599 (or 26520 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 13603503285840 in words is "thirteen trillion, six hundred three billion, five hundred three million, two hundred eighty-five thousand, eight hundred forty".