55666313485 has 4 divisors (see below), whose sum is σ = 66799576188. Its totient is φ = 44533050784.

The previous prime is 55666313419. The next prime is 55666313489. The reversal of 55666313485 is 58431366655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34984709764 + 20681603721 = 187042^2 + 143811^2 .

It is a cyclic number.

It is not a de Polignac number, because 55666313485 - 2¹³ = 55666305293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55666313489) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5566631344 + ... + 5566631353.

It is an arithmetic number, because the mean of its divisors is an integer number (16699894047).

Almost surely, 2^55666313485 is an apocalyptic number.

It is an amenable number.

55666313485 is a deficient number, since it is larger than the sum of its proper divisors (11133262703).

55666313485 is a wasteful number, since it uses less digits than its factorization.

55666313485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11133262702.

The product of its digits is 7776000, while the sum is 52.

The spelling of 55666313485 in words is "fifty-five billion, six hundred sixty-six million, three hundred thirteen thousand, four hundred eighty-five".