6555217456 has 20 divisors (see below), whose sum is σ = 12745940904. Its totient is φ = 3265942400.

The previous prime is 6555217439. The next prime is 6555217457. The reversal of 6555217456 is 6547125556.

It is a super-3 number, since 3×6555217456³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (6555217457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 724510 + ... + 733501.

Almost surely, 2^6555217456 is an apocalyptic number.

It is an amenable number.

6555217456 is a deficient number, since it is larger than the sum of its proper divisors (6190723448).

6555217456 is a wasteful number, since it uses less digits than its factorization.

6555217456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458300 (or 1458294 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 46.

The square root of 6555217456 is about 80964.2974155893. The cubic root of 6555217456 is about 1871.5252938952.

The spelling of 6555217456 in words is "six billion, five hundred fifty-five million, two hundred seventeen thousand, four hundred fifty-six".