56516050555566 has 32 divisors (see below), whose sum is σ = 129659765506560. Its totient is φ = 16087415343456.

The previous prime is 56516050555519. The next prime is 56516050555567. The reversal of 56516050555566 is 66555505061565.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56516050555567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2501141586 + ... + 2501164181.

It is an arithmetic number, because the mean of its divisors is an integer number (4051867672080).

Almost surely, 2^{56516050555566} is an apocalyptic number.

56516050555566 is an abundant number, since it is smaller than the sum of its proper divisors (73143714950994).

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

56516050555566 is a wasteful number, since it uses less digits than its factorization.

56516050555566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5002306048.

The product of its (nonzero) digits is 101250000, while the sum is 60.

The spelling of 56516050555566 in words is "fifty-six trillion, five hundred sixteen billion, fifty million, five hundred fifty-five thousand, five hundred sixty-six".