55243346506321 has 16 divisors (see below), whose sum is σ = 55943114102784. Its totient is φ = 54547243393104.

The previous prime is 55243346506247. The next prime is 55243346506349. The reversal of 55243346506321 is 12360564334255.

It is a cyclic number.

It is not a de Polignac number, because 55243346506321 - 2³⁵ = 55208986767953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55243376506321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43314286 + ... + 44571448.

It is an arithmetic number, because the mean of its divisors is an integer number (3496444631424).

Almost surely, 2^{55243346506321} is an apocalyptic number.

It is an amenable number.

55243346506321 is a deficient number, since it is larger than the sum of its proper divisors (699767596463).

55243346506321 is a wasteful number, since it uses less digits than its factorization.

55243346506321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258620.

The product of its (nonzero) digits is 7776000, while the sum is 49.

The spelling of 55243346506321 in words is "fifty-five trillion, two hundred forty-three billion, three hundred forty-six million, five hundred six thousand, three hundred twenty-one".