12855650511 has 16 divisors (see below), whose sum is σ = 18782991360. Its totient is φ = 7756360320.

The previous prime is 12855650503. The next prime is 12855650551. The reversal of 12855650511 is 11505655821.

It is not a de Polignac number, because 12855650511 - 2³ = 12855650503 is a prime.

It is a super-2 number, since 2×12855650511² (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 12855650511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12855650501) by changing a digit.

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, 866106 + ... + 880823.

It is an arithmetic number, because the mean of its divisors is an integer number (1173936960).

Almost surely, 2^12855650511 is an apocalyptic number.

12855650511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12855650511 is a deficient number, since it is larger than the sum of its proper divisors (5927340849).

12855650511 is a wasteful number, since it uses less digits than its factorization.

12855650511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747166.

The product of its (nonzero) digits is 60000, while the sum is 39.

It can be divided in two parts, 12855 and 650511, that added together give a palindrome (663366).

The spelling of 12855650511 in words is "twelve billion, eight hundred fifty-five million, six hundred fifty thousand, five hundred eleven".