54166666145 has 4 divisors (see below), whose sum is σ = 64999999380. Its totient is φ = 43333332912.

The previous prime is 54166666123. The next prime is 54166666171.

54166666145 is nontrivially palindromic in base 10.

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 38096793856 + 16069872289 = 195184^2 + 126767^2 .

It is a cyclic number.

It is not a de Polignac number, because 54166666145 - 2²⁴ = 54149888929 is a prime.

It is a super-2 number, since 2×54166666145² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 54166666093 and 54166666102.

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 3 ways as a sum of consecutive naturals, for example, 5416666610 + ... + 5416666619.

It is an arithmetic number, because the mean of its divisors is an integer number (16249999845).

Almost surely, 2^54166666145 is an apocalyptic number.

It is an amenable number.

54166666145 is a deficient number, since it is larger than the sum of its proper divisors (10833333235).

54166666145 is a wasteful number, since it uses less digits than its factorization.

54166666145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10833333234.

The product of its digits is 3110400, while the sum is 50.

The spelling of 54166666145 in words is "fifty-four billion, one hundred sixty-six million, six hundred sixty-six thousand, one hundred forty-five".