4165664225545 has 32 divisors (see below), whose sum is σ = 5374200545280. Its totient is φ = 3089758507200.

The previous prime is 4165664225543. The next prime is 4165664225587. The reversal of 4165664225545 is 5455224665614.

It is not a de Polignac number, because 4165664225545 - 2¹ = 4165664225543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4165664225543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122998284 + ... + 123032146.

It is an arithmetic number, because the mean of its divisors is an integer number (167943767040).

Almost surely, 2^{4165664225545} is an apocalyptic number.

It is an amenable number.

4165664225545 is a deficient number, since it is larger than the sum of its proper divisors (1208536319735).

4165664225545 is a wasteful number, since it uses less digits than its factorization.

4165664225545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61485.

The product of its digits is 34560000, while the sum is 55.

The spelling of 4165664225545 in words is "four trillion, one hundred sixty-five billion, six hundred sixty-four million, two hundred twenty-five thousand, five hundred forty-five".