556768867655 has 64 divisors (see below), whose sum is σ = 897249540096. Its totient is φ = 320310720000.

The previous prime is 556768867649. The next prime is 556768867657.

556768867655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 556768867655 - 2²² = 556764673351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556768867657) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32779265 + ... + 32796245.

It is an arithmetic number, because the mean of its divisors is an integer number (14019524064).

Almost surely, 2^556768867655 is an apocalyptic number.

556768867655 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

556768867655 is a deficient number, since it is larger than the sum of its proper divisors (340480672441).

556768867655 is a wasteful number, since it uses less digits than its factorization.

556768867655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23568.

The product of its digits is 2540160000, while the sum is 74.

The spelling of 556768867655 in words is "five hundred fifty-six billion, seven hundred sixty-eight million, eight hundred sixty-seven thousand, six hundred fifty-five".