55216346345 has 8 divisors (see below), whose sum is σ = 68050416264. Its totient is φ = 42979209984.

The previous prime is 55216346321. The next prime is 55216346351. The reversal of 55216346345 is 54364361255.

It can be written as a sum of positive squares in 4 ways, for example, as 35867814544 + 19348531801 = 189388^2 + 139099^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 55216346345 - 2⁸ = 55216346089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55216346296 and 55216346305.

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, 149233184 + ... + 149233553.

It is an arithmetic number, because the mean of its divisors is an integer number (8506302033).

Almost surely, 2^55216346345 is an apocalyptic number.

It is an amenable number.

55216346345 is a deficient number, since it is larger than the sum of its proper divisors (12834069919).

55216346345 is a wasteful number, since it uses less digits than its factorization.

55216346345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298466779.

The product of its digits is 1296000, while the sum is 44.

The spelling of 55216346345 in words is "fifty-five billion, two hundred sixteen million, three hundred forty-six thousand, three hundred forty-five".