11123455666680 has 144 divisors (see below), whose sum is σ = 42053472765720. Its totient is φ = 2542504148352.

The previous prime is 11123455666667. The next prime is 11123455666703. The reversal of 11123455666680 is 8666655432111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 315273054 + ... + 315308333.

Almost surely, 2^{11123455666680} is an apocalyptic number.

11123455666680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11123455666680 is an abundant number, since it is smaller than the sum of its proper divisors (30930017099040).

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

11123455666680 is a wasteful number, since it uses less digits than its factorization.

11123455666680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630581418 (or 630581404 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 11123455666680 in words is "eleven trillion, one hundred twenty-three billion, four hundred fifty-five million, six hundred sixty-six thousand, six hundred eighty".