11006511321255 has 16 divisors (see below), whose sum is σ = 17610716075904. Its totient is φ = 5870040050720.

The previous prime is 11006511321149. The next prime is 11006511321341. The reversal of 11006511321255 is 55212311560011.

It is a happy number.

It is not a de Polignac number, because 11006511321255 - 2¹² = 11006511317159 is a prime.

It is a super-2 number, since 2×11006511321255² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 5287041 + ... + 7068650.

It is an arithmetic number, because the mean of its divisors is an integer number (1100669754744).

Almost surely, 2^{11006511321255} is an apocalyptic number.

11006511321255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11006511321255 is a deficient number, since it is larger than the sum of its proper divisors (6604204754649).

11006511321255 is a wasteful number, since it uses less digits than its factorization.

11006511321255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12415086.

The product of its (nonzero) digits is 9000, while the sum is 33.

Adding to 11006511321255 its reverse (55212311560011), we get a palindrome (66218822881266).

The spelling of 11006511321255 in words is "eleven trillion, six billion, five hundred eleven million, three hundred twenty-one thousand, two hundred fifty-five".