13603561321000 has 64 divisors (see below), whose sum is σ = 36379809722880. Its totient is φ = 4664078164800.

The previous prime is 13603561320959. The next prime is 13603561321039. The reversal of 13603561321000 is 12316530631.

It is a super-2 number, since 2×13603561321000² (a number of 27 digits) contains 22 as substring.

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, 971675952 + ... + 971689951.

It is an arithmetic number, because the mean of its divisors is an integer number (568434526920).

Almost surely, 2^{13603561321000} is an apocalyptic number.

13603561321000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13603561321000 is an abundant number, since it is smaller than the sum of its proper divisors (22776248401880).

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

13603561321000 is a wasteful number, since it uses less digits than its factorization.

13603561321000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943365931 (or 1943365917 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

Adding to 13603561321000 its reverse (12316530631), we get a palindrome (13615877851631).

The spelling of 13603561321000 in words is "thirteen trillion, six hundred three billion, five hundred sixty-one million, three hundred twenty-one thousand".