11551202513205 has 16 divisors (see below), whose sum is σ = 18530689001280. Its totient is φ = 6144386347008.

The previous prime is 11551202513197. The next prime is 11551202513231. The reversal of 11551202513205 is 50231520215511.

It is not a de Polignac number, because 11551202513205 - 2³ = 11551202513197 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 1015931212 + ... + 1015942581.

It is an arithmetic number, because the mean of its divisors is an integer number (1158168062580).

Almost surely, 2^{11551202513205} is an apocalyptic number.

11551202513205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11551202513205 is a deficient number, since it is larger than the sum of its proper divisors (6979486488075).

11551202513205 is a wasteful number, since it uses less digits than its factorization.

11551202513205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031874180.

The product of its (nonzero) digits is 15000, while the sum is 33.

Adding to 11551202513205 its reverse (50231520215511), we get a palindrome (61782722728716).

The spelling of 11551202513205 in words is "eleven trillion, five hundred fifty-one billion, two hundred two million, five hundred thirteen thousand, two hundred five".