6557217000556 has 12 divisors (see below), whose sum is σ = 11475147684168. Its totient is φ = 3278603376512.

The previous prime is 6557217000461. The next prime is 6557217000563. The reversal of 6557217000556 is 6550007127556.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4308540 + ... + 5628316.

It is an arithmetic number, because the mean of its divisors is an integer number (956262307014).

Almost surely, 2^{6557217000556} is an apocalyptic number.

It is an amenable number.

6557217000556 is a deficient number, since it is larger than the sum of its proper divisors (4917930683612).

6557217000556 is a wasteful number, since it uses less digits than its factorization.

6557217000556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561888 (or 2561886 counting only the distinct ones).

The product of its (nonzero) digits is 2205000, while the sum is 49.

The spelling of 6557217000556 in words is "six trillion, five hundred fifty-seven billion, two hundred seventeen million, five hundred fifty-six", and thus it is an aban number.