4165245561 has 8 divisors (see below), whose sum is σ = 5553959040. Its totient is φ = 2776681232.

The previous prime is 4165245551. The next prime is 4165245589. The reversal of 4165245561 is 1655425614.

4165245561 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 4165245561 - 2⁷ = 4165245433 is a prime.

It is a super-4 number, since 4×4165245561⁴ (a number of 40 digits) contains 4444 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4165245521) 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, 88480 + ... + 127118.

It is an arithmetic number, because the mean of its divisors is an integer number (694244880).

Almost surely, 2^4165245561 is an apocalyptic number.

It is an amenable number.

4165245561 is a deficient number, since it is larger than the sum of its proper divisors (1388713479).

4165245561 is a wasteful number, since it uses less digits than its factorization.

4165245561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74575.

The product of its digits is 144000, while the sum is 39.

The square root of 4165245561 is about 64538.7136608718. The cubic root of 4165245561 is about 1608.9660118823.

The spelling of 4165245561 in words is "four billion, one hundred sixty-five million, two hundred forty-five thousand, five hundred sixty-one".