55334821556566 has 16 divisors (see below), whose sum is σ = 86313930013440. Its totient is φ = 26573501590720.

The previous prime is 55334821556557. The next prime is 55334821556603. The reversal of 55334821556566 is 66565512843355.

It is a junction number, because it is equal to n+sod(n) for n = 55334821556498 and 55334821556507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2497498471 + ... + 2497520626.

It is an arithmetic number, because the mean of its divisors is an integer number (5394620625840).

Almost surely, 2^{55334821556566} is an apocalyptic number.

55334821556566 is a deficient number, since it is larger than the sum of its proper divisors (30979108456874).

55334821556566 is a wasteful number, since it uses less digits than its factorization.

55334821556566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4995019319.

The product of its digits is 388800000, while the sum is 64.

The spelling of 55334821556566 in words is "fifty-five trillion, three hundred thirty-four billion, eight hundred twenty-one million, five hundred fifty-six thousand, five hundred sixty-six".