54185442185 has 32 divisors (see below), whose sum is σ = 74865911040. Its totient is φ = 36879028992.

The previous prime is 54185442173. The next prime is 54185442187. The reversal of 54185442185 is 58124458145.

It is a cyclic number.

It is not a de Polignac number, because 54185442185 - 2⁴ = 54185442169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54185442187) 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 31 ways as a sum of consecutive naturals, for example, 5594567 + ... + 5604243.

It is an arithmetic number, because the mean of its divisors is an integer number (2339559720).

Almost surely, 2^54185442185 is an apocalyptic number.

It is an amenable number.

54185442185 is a deficient number, since it is larger than the sum of its proper divisors (20680468855).

54185442185 is a wasteful number, since it uses less digits than its factorization.

54185442185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10865.

The product of its digits is 1024000, while the sum is 47.

The spelling of 54185442185 in words is "fifty-four billion, one hundred eighty-five million, four hundred forty-two thousand, one hundred eighty-five".