1116556666520 has 16 divisors (see below), whose sum is σ = 2512252499760. Its totient is φ = 446622666592.

The previous prime is 1116556666471. The next prime is 1116556666553. The reversal of 1116556666520 is 256666556111.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13956958292 + ... + 13956958371.

It is an arithmetic number, because the mean of its divisors is an integer number (157015781235).

Almost surely, 2^{1116556666520} is an apocalyptic number.

1116556666520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1116556666520 is an abundant number, since it is smaller than the sum of its proper divisors (1395695833240).

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

1116556666520 is a wasteful number, since it uses less digits than its factorization.

1116556666520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27913916674 (or 27913916670 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 50.

The spelling of 1116556666520 in words is "one trillion, one hundred sixteen billion, five hundred fifty-six million, six hundred sixty-six thousand, five hundred twenty".