55866866855 has 8 divisors (see below), whose sum is σ = 67258614192. Its totient is φ = 44547910848.

The previous prime is 55866866849. The next prime is 55866866903.

55866866855 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55866866855 is a prime.

It is a super-2 number, since 2×55866866855² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18196142 + ... + 18199211.

It is an arithmetic number, because the mean of its divisors is an integer number (8407326774).

Almost surely, 2^55866866855 is an apocalyptic number.

55866866855 is a deficient number, since it is larger than the sum of its proper divisors (11391747337).

55866866855 is a wasteful number, since it uses less digits than its factorization.

55866866855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36395665.

The product of its digits is 414720000, while the sum is 68.

The spelling of 55866866855 in words is "fifty-five billion, eight hundred sixty-six million, eight hundred sixty-six thousand, eight hundred fifty-five".