56066561556220 has 12 divisors (see below), whose sum is σ = 117739779268104. Its totient is φ = 22426624622480.

The previous prime is 56066561556217. The next prime is 56066561556277. The reversal of 56066561556220 is 2265516566065.

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, 1401664038886 + ... + 1401664038925.

It is an arithmetic number, because the mean of its divisors is an integer number (9811648272342).

Almost surely, 2^{56066561556220} is an apocalyptic number.

It is an amenable number.

56066561556220 is an abundant number, since it is smaller than the sum of its proper divisors (61673217711884).

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

56066561556220 is a wasteful number, since it uses less digits than its factorization.

56066561556220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803328077820 (or 2803328077818 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 55.

The spelling of 56066561556220 in words is "fifty-six trillion, sixty-six billion, five hundred sixty-one million, five hundred fifty-six thousand, two hundred twenty".