56661105224540 has 12 divisors (see below), whose sum is σ = 118988320971576. Its totient is φ = 22664442089808.

The previous prime is 56661105224417. The next prime is 56661105224557. The reversal of 56661105224540 is 4542250116665.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1416527630594 + ... + 1416527630633.

It is an arithmetic number, because the mean of its divisors is an integer number (9915693414298).

Almost surely, 2^{56661105224540} is an apocalyptic number.

It is an amenable number.

56661105224540 is an abundant number, since it is smaller than the sum of its proper divisors (62327215747036).

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

56661105224540 is a wasteful number, since it uses less digits than its factorization.

56661105224540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833055261236 (or 2833055261234 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 47.

The spelling of 56661105224540 in words is "fifty-six trillion, six hundred sixty-one billion, one hundred five million, two hundred twenty-four thousand, five hundred forty".