605621655555 has 32 divisors (see below), whose sum is σ = 1108285853184. Its totient is φ = 276639764736.

The previous prime is 605621655479. The next prime is 605621655577. The reversal of 605621655555 is 555556126506.

It is a happy number.

It is not a de Polignac number, because 605621655555 - 2¹⁶ = 605621590019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 605621655498 and 605621655507.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2113074 + ... + 2382503.

It is an arithmetic number, because the mean of its divisors is an integer number (34633932912).

Almost surely, 2^605621655555 is an apocalyptic number.

605621655555 is a deficient number, since it is larger than the sum of its proper divisors (502664197629).

605621655555 is a wasteful number, since it uses less digits than its factorization.

605621655555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496875.

The product of its (nonzero) digits is 6750000, while the sum is 51.

The spelling of 605621655555 in words is "six hundred five billion, six hundred twenty-one million, six hundred fifty-five thousand, five hundred fifty-five".