2255561620555 has 8 divisors (see below), whose sum is σ = 2737086012000. Its totient is φ = 1784174584896.

The previous prime is 2255561620541. The next prime is 2255561620561. The reversal of 2255561620555 is 5550261655522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2255561620555 - 2⁹ = 2255561620043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2255561620499 and 2255561620508.

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, 2534338455 + ... + 2534339344.

It is an arithmetic number, because the mean of its divisors is an integer number (342135751500).

Almost surely, 2^{2255561620555} is an apocalyptic number.

2255561620555 is a deficient number, since it is larger than the sum of its proper divisors (481524391445).

2255561620555 is an equidigital number, since it uses as much as digits as its factorization.

2255561620555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5068677893.

The product of its (nonzero) digits is 4500000, while the sum is 49.

The spelling of 2255561620555 in words is "two trillion, two hundred fifty-five billion, five hundred sixty-one million, six hundred twenty thousand, five hundred fifty-five".