2255561620556 has 24 divisors (see below), whose sum is σ = 4083401562240. Its totient is φ = 1089033292800.

The previous prime is 2255561620541. The next prime is 2255561620561. The reversal of 2255561620556 is 6550261655522.

2255561620556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19671701 + ... + 19786028.

It is an arithmetic number, because the mean of its divisors is an integer number (170141731760).

Almost surely, 2^{2255561620556} is an apocalyptic number.

It is an amenable number.

2255561620556 is a deficient number, since it is larger than the sum of its proper divisors (1827839941684).

2255561620556 is a wasteful number, since it uses less digits than its factorization.

2255561620556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39458225 (or 39458223 counting only the distinct ones).

The product of its (nonzero) digits is 5400000, while the sum is 50.

The spelling of 2255561620556 in words is "two trillion, two hundred fifty-five billion, five hundred sixty-one million, six hundred twenty thousand, five hundred fifty-six".