11551666652656 has 40 divisors (see below), whose sum is σ = 24224117439200. Its totient is φ = 5304746785536.

The previous prime is 11551666652573. The next prime is 11551666652741. The reversal of 11551666652656 is 65625666615511.

It is a junction number, because it is equal to n+sod(n) for n = 11551666652594 and 11551666652603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139498455 + ... + 139581238.

It is an arithmetic number, because the mean of its divisors is an integer number (605602935980).

Almost surely, 2^{11551666652656} is an apocalyptic number.

11551666652656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11551666652656 is an abundant number, since it is smaller than the sum of its proper divisors (12672450786544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11551666652656 is a wasteful number, since it uses less digits than its factorization.

11551666652656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279079913 (or 279079907 counting only the distinct ones).

The product of its digits is 58320000, while the sum is 61.

The spelling of 11551666652656 in words is "eleven trillion, five hundred fifty-one billion, six hundred sixty-six million, six hundred fifty-two thousand, six hundred fifty-six".