4164767561 has 8 divisors (see below), whose sum is σ = 4175476800. Its totient is φ = 4154072400.

The previous prime is 4164767557. The next prime is 4164767569. The reversal of 4164767561 is 1657674614.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4164767561 - 2² = 4164767557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4164767569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813911 + ... + 819011.

It is an arithmetic number, because the mean of its divisors is an integer number (521934600).

Almost surely, 2^4164767561 is an apocalyptic number.

It is an amenable number.

4164767561 is a deficient number, since it is larger than the sum of its proper divisors (10709239).

4164767561 is a wasteful number, since it uses less digits than its factorization.

4164767561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7039.

The product of its digits is 846720, while the sum is 47.

The square root of 4164767561 is about 64535.0103509715. The cubic root of 4164767561 is about 1608.9044616757.

The spelling of 4164767561 in words is "four billion, one hundred sixty-four million, seven hundred sixty-seven thousand, five hundred sixty-one".