82317216568555 has 16 divisors (see below), whose sum is σ = 106152350925600. Its totient is φ = 61054946929152.

The previous prime is 82317216568547. The next prime is 82317216568571. The reversal of 82317216568555 is 55586561271328.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 82317216568555 - 2³ = 82317216568547 is a prime.

It is a super-2 number, since 2×82317216568555² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7227142380 + ... + 7227153769.

It is an arithmetic number, because the mean of its divisors is an integer number (6634521932850).

Almost surely, 2^{82317216568555} is an apocalyptic number.

82317216568555 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

82317216568555 is a deficient number, since it is larger than the sum of its proper divisors (23835134357045).

82317216568555 is a wasteful number, since it uses less digits than its factorization.

82317216568555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14454296238.

The product of its digits is 120960000, while the sum is 64.

The spelling of 82317216568555 in words is "eighty-two trillion, three hundred seventeen billion, two hundred sixteen million, five hundred sixty-eight thousand, five hundred fifty-five".