54985157185 has 12 divisors (see below), whose sum is σ = 76754791188. Its totient is φ = 37704107616.

The previous prime is 54985157177. The next prime is 54985157233. The reversal of 54985157185 is 58175158945.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26310137616 + 28675019569 = 162204^2 + 169337^2 .

It is not a de Polignac number, because 54985157185 - 2³ = 54985157177 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 112214362 + ... + 112214851.

It is an arithmetic number, because the mean of its divisors is an integer number (6396232599).

Almost surely, 2^54985157185 is an apocalyptic number.

It is an amenable number.

54985157185 is a deficient number, since it is larger than the sum of its proper divisors (21769634003).

54985157185 is a wasteful number, since it uses less digits than its factorization.

54985157185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224429232 (or 224429225 counting only the distinct ones).

The product of its digits is 10080000, while the sum is 58.

The spelling of 54985157185 in words is "fifty-four billion, nine hundred eighty-five million, one hundred fifty-seven thousand, one hundred eighty-five".