11515135005206 has 16 divisors (see below), whose sum is σ = 19748480651424. Its totient is φ = 4932995555904.

The previous prime is 11515135005137. The next prime is 11515135005211. The reversal of 11515135005206 is 60250053151511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171823925 + ... + 171890928.

It is an arithmetic number, because the mean of its divisors is an integer number (1234280040714).

Almost surely, 2^{11515135005206} is an apocalyptic number.

11515135005206 is a deficient number, since it is larger than the sum of its proper divisors (8233345646218).

11515135005206 is a wasteful number, since it uses less digits than its factorization.

11515135005206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343717255.

The product of its (nonzero) digits is 22500, while the sum is 35.

Adding to 11515135005206 its reverse (60250053151511), we get a palindrome (71765188156717).

The spelling of 11515135005206 in words is "eleven trillion, five hundred fifteen billion, one hundred thirty-five million, five thousand, two hundred six".