56218485555 has 12 divisors (see below), whose sum is σ = 97445375040. Its totient is φ = 29983192272.

The previous prime is 56218485541. The next prime is 56218485623. The reversal of 56218485555 is 55558481265.

It is a happy number.

56218485555 is a `hidden beast` number, since 5 + 6 + 2 + 1 + 8 + 4 + 85 + 555 = 666.

It is not a de Polignac number, because 56218485555 - 2⁴ = 56218485539 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 624649795 + ... + 624649884.

It is an arithmetic number, because the mean of its divisors is an integer number (8120447920).

Almost surely, 2^56218485555 is an apocalyptic number.

56218485555 is a deficient number, since it is larger than the sum of its proper divisors (41226889485).

56218485555 is a wasteful number, since it uses less digits than its factorization.

56218485555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249299690 (or 1249299687 counting only the distinct ones).

The product of its digits is 9600000, while the sum is 54.

The spelling of 56218485555 in words is "fifty-six billion, two hundred eighteen million, four hundred eighty-five thousand, five hundred fifty-five".