4151666561 has 12 divisors (see below), whose sum is σ = 4859127792. Its totient is φ = 3536732808.

The previous prime is 4151666551. The next prime is 4151666587. The reversal of 4151666561 is 1656661514.

It is not a de Polignac number, because 4151666561 - 2¹⁴ = 4151650177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4151666521) 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 11 ways as a sum of consecutive naturals, for example, 251915 + ... + 267888.

It is an arithmetic number, because the mean of its divisors is an integer number (404927316).

Almost surely, 2^4151666561 is an apocalyptic number.

It is an amenable number.

4151666561 is a deficient number, since it is larger than the sum of its proper divisors (707461231).

4151666561 is a wasteful number, since it uses less digits than its factorization.

4151666561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519980 (or 519973 counting only the distinct ones).

The product of its digits is 129600, while the sum is 41.

The square root of 4151666561 is about 64433.4273572344. The cubic root of 4151666561 is about 1607.2156601181.

The spelling of 4151666561 in words is "four billion, one hundred fifty-one million, six hundred sixty-six thousand, five hundred sixty-one".