13563199700 has 18 divisors (see below), whose sum is σ = 29432143566. Its totient is φ = 5425279840.

The previous prime is 13563199693. The next prime is 13563199721. The reversal of 13563199700 is 799136531.

It can be written as a sum of positive squares in 3 ways, for example, as 2017267396 + 11545932304 = 44914^2 + 107452^2 .

It is a super-2 number, since 2×13563199700² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67815899 + ... + 67816098.

It is an arithmetic number, because the mean of its divisors is an integer number (1635119087).

Almost surely, 2^13563199700 is an apocalyptic number.

13563199700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13563199700 is an abundant number, since it is smaller than the sum of its proper divisors (15868943866).

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

13563199700 is a wasteful number, since it uses less digits than its factorization.

13563199700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135632011 (or 135632004 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 44.

The spelling of 13563199700 in words is "thirteen billion, five hundred sixty-three million, one hundred ninety-nine thousand, seven hundred".