13361249205 has 24 divisors (see below), whose sum is σ = 23326124640. Its totient is φ = 7074730080.

The previous prime is 13361249197. The next prime is 13361249221. The reversal of 13361249205 is 50294216331.

13361249205 is a `hidden beast` number, since 1 + 33 + 612 + 4 + 9 + 2 + 0 + 5 = 666.

It is not a de Polignac number, because 13361249205 - 2³ = 13361249197 is a prime.

It is a super-2 number, since 2×13361249205² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13361249205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1061791 + ... + 1074300.

It is an arithmetic number, because the mean of its divisors is an integer number (971921860).

Almost surely, 2^13361249205 is an apocalyptic number.

13361249205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13361249205 is a deficient number, since it is larger than the sum of its proper divisors (9964875435).

13361249205 is a wasteful number, since it uses less digits than its factorization.

13361249205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136241 (or 2136238 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 13361249205 in words is "thirteen billion, three hundred sixty-one million, two hundred forty-nine thousand, two hundred five".